PHP 7.0.6 Released

    fsockopen

    (PHP 4, PHP 5, PHP 7)

    fsockopen — Open Internet or Unix domain socket connection

    Description

    resource fsockopen ( string $hostname [, int $port = -1 [, int &$errno [, string &$errstr [, float $timeout = ini_get("default_socket_timeout") ]]]] )

    Initiates a socket connection to the resource specified by hostname.

    PHP supports targets in the Internet and Unix domains as described in List of Supported Socket Transports. A list of supported transports can also be retrieved using stream_get_transports().

    The socket will by default be opened in blocking mode. You can switch it to non-blocking mode by using stream_set_blocking().

    The function stream_socket_client() is similar but provides a richer set of options, including non-blocking connection and the ability to provide a stream context.

    Parameters

    hostname

    If OpenSSL support is installed, you may prefix the hostname with either ssl:// or tls:// to use an SSL or TLS client connection over TCP/IP to connect to the remote host.

    port

    The port number. This can be omitted and skipped with -1 for transports that do not use ports, such as unix://.

    errno

    If provided, holds the system level error number that occurred in the system-level connect() call.

    If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket.

    errstr

    The error message as a string.

    timeout

    The connection timeout, in seconds.

    Note:

    If you need to set a timeout for reading/writing data over the socket, use stream_set_timeout(), as the timeout parameter to fsockopen() only applies while connecting the socket.

    Return Values

    fsockopen() returns a file pointer which may be used together with the other file functions (such as fgets(), fgetss(), fwrite(), fclose(), and feof()). If the call fails, it will return FALSE

    Errors/Exceptions

    Throws E_WARNING if hostname is not a valid domain.

    Examples

    Example #1 fsockopen() Example

    <?php
    $fp     = fsockopen("www.example.com", 80, $errno, $errstr, 30);
    if (!    $fp) {
        echo     "$errstr ($errno)<br />\n";
    } else {
            $out = "GET / HTTP/1.1\r\n";
            $out .= "Host: www.example.com\r\n";
            $out .= "Connection: Close\r\n\r\n";
            fwrite($fp, $out);
        while (!    feof($fp)) {
            echo     fgets($fp, 128);
        }
            fclose($fp);
    }
    ?>

    Example #2 Using UDP connection

    The example below shows how to retrieve the day and time from the UDP service "daytime" (port 13) in your own machine.

    <?php
    $fp     = fsockopen("udp://127.0.0.1", 13, $errno, $errstr);
    if (!    $fp) {
        echo     "ERROR: $errno - $errstr<br />\n";
    } else {
            fwrite($fp, "\n");
        echo     fread($fp, 26);
            fclose($fp);
    }
    ?>

    Notes

    Note:

    Depending on the environment, the Unix domain or the optional connect timeout may not be available.

    Warning

    UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

    Note: When specifying a numerical IPv6 address (e.g. fe80::1), you must enclose the IP in square brackets—for example, tcp://[fe80::1]:80.

    See Also

    User Contributed Notes

    ryan1_00 at hotmail dot com
    9 years ago
    This script checks specific ports so you need to have the correct port open on the server for this to work.

    E.g if i have a windows domain controller and it is servering LDAP then the following would be used to check it is online:
    <?php
    chkServer    ("MyDC", "389");
    ?>

    for a webserver:
    <?php
    chkServer    ("MyWebSvr", "80");
    ?>

    etc etc
    --------------------------------------------------------

    <?php
    // check if a server is up by connecting to a port
    function chkServer($host, $port)
    {  
            $hostip = @gethostbyname($host); // resloves IP from Hostname returns hostname on failure
       
            if ($hostip == $host) // if the IP is not resloved
            {
            echo     "Server is down or does not exist";
        }
        else
        {
            if (!    $x = @fsockopen($hostip, $port, $errno, $errstr, 5)) // attempt to connect
                {
                echo     "Server is down";
            }
            else
            {
                echo     "Server is up";
                if (    $x)
                {
                    @    fclose($x); //close connection
                    }
            } 
        }
    }
    ?>
    p14nd4
    1 year ago
    It appears that in PHP 5.6.0 (at least the version in Debian jessie, with openssl 1.0.1h-3), this function *is* now validating SSL certificates (in a variety of ways). First, it appears to fail for untrusted certificates (i.e. no matching CA trusted locally), and secondly, it appears to fail for mismatched hostnames in the request and certificate.

    ---------
    $ echo "<?php echo fsockopen(\"ssl://localhost\", 993); ?>" | php -a
    Interactive mode enabled

    PHP Warning    :  fsockopen(): Peer certificate CN=`my.test.server' did not match expected CN=`localhost' in - on line 1
    PHP Warning:  fsockopen(): Failed to enable crypto in - on line 1
    PHP Warning:  fsockopen(): unable to connect to ssl://localhost:993 (Unknown error) in - on line 1
    ----------
    $ echo "<?php echo fsockopen(\"ssl://my.test.server\", 993); ?>" | php -a
    Interactive mode enabled

    PHP Warning:  fsockopen(): SSL operation failed with code 1. OpenSSL Error messages:
    error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed in - on line 1
    PHP Warning:  fsockopen(): Failed to enable crypto in - on line 1
    PHP Warning:  fsockopen(): unable to connect to ssl://my.test.server:993 (Unknown error) in - on line 1
    ---------
    #installed CA locally
    ---------
    $ echo "<?php echo fsockopen(\"ssl://my.test.server\", 993); ?>" | php -a
    Interactive mode enabled

    Resource id #1
    Alexander Wegener
    8 years ago
    To check if a Url is Online (with http and https)
    Using @fgets to hide Warning when using SSL
    (Bug: "Warning: function.fgets SSL: fatal protocol error", http://bugs.php.net/bug.php?id=23220)

    <?php

            function isOnline($url) {
            if (!    $url_info = parse_url($url)) {
                return     false;   
            }
           
            switch (    $url_info['scheme']) {
                case     'https':
                        $scheme = 'ssl://';
                        $port = 443;
                    break;
                case     'http':
                default:
                        $scheme = '';
                        $port = 80;   
            }
           
                $data = "";
                $fid = @fsockopen($scheme . $url_info['host'], $port, $errno, $errstr, 30);
            if (    $fid) {
                    fputs($fid, 'HEAD ' . (isset($url_info['path'])? $url_info['path']: '/') . (isset($url_info['query'])? '?' . $url_info['query']: '') . " HTTP/1.0\r\n" .
                                "Connection: close\r\n" .
                                'Host: ' . $url_info['host'] . "\r\n\r\n");   
                while (!    feof($fid)) {
                        $data .= @fgets($fid, 128);
                }
                    fclose($fid);
                return !empty(    $data);
            } else {
                return     false;
            }
        }

    ?>
    nytro_rst at yahoo dot com
    6 years ago
    A simple proxy list checker. You can check a list ip:port if that port is opened on that IP.

    <?php

    $fisier     = file_get_contents('proxy_list.txt'); // Read the file with the proxy list
    $linii = explode("\n", $fisier); // Get each proxy
    $fisier = fopen("bune.txt", "a"); // Here we will write the good ones

    for($i = 0; $i < count($linii) - 1; $i++) test($linii[$i]); // Test each proxy

    function test($proxy)
    {
      global     $fisier;
          $splited = explode(':',$proxy); // Separate IP and port
          if($con = @fsockopen($splited[0], $splited[1], $eroare, $eroare_str, 3))
      {
            fwrite($fisier, $proxy . "\n"); // Check if we can connect to that IP and port
            print $proxy . '<br>'; // Show the proxy
            fclose($con); // Close the socket handle
          }
    }

    fclose($fisier); // Close the file

    ?>
    asalamanca at redcetus dot com
    12 years ago
    This is a very fast program for test a form or link (many times).
    <?php
    $repeat      = 100;  // How many times repeat the test

    $timeout = 100;  // Max time for stablish the conection
    $size    = 16;   // Bytes will be read (and display). 0 for read all

    $server  = '127.0.0.1';            // IP address
    $host    = 'www.example.net';             // Domain name
    $target  = '/poll/answer.asp';        // Specific program
    $referer = 'http://www.example.com/';    // Referer
    $port    = 80;

    // Setup an array of fields to get with then create the get string
    $gets = array ( 'get_field_1' => 'somevalue',
                        'get_field_2' => 'somevalue' );

    // Setup an array of fields to post with then create the post string
    $posts = array ( 'post_field_1' => 'somevalue',
                         'post_field_2' => 'somevalue' );

    // That's all. Now the program proccess $repeat times

    $method = "GET";
    if (     is_array( $gets ) ) {
            $getValues = '?';
        foreach(     $gets AS $name => $value ){
                $getValues .= urlencode( $name ) . "=" . urlencode( $value ) . '&';
        }
            $getValues = substr( $getValues, 0, -1 );
    } else {
            $getValues = '';
    }

    if (     is_array( $posts ) ) {
        foreach(     $posts AS $name => $value ){
                $postValues .= urlencode( $name ) . "=" . urlencode( $value ) . '&';
        }
            $postValues = substr( $postValues, 0, -1 );
            $method = "POST";
    } else {
            $postValues = '';
    }

    $request  = "$method $target$getValues HTTP/1.1\r\n";
    $request .= "Host: $host\r\n";
    $request .= 'User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) ';
    $request .= "Gecko/20021204\r\n";
    $request .= 'Accept: text/xml,application/xml,application/xhtml+xml,';
    $request .= 'text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,';
    $request .= "image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1\r\n";
    $request .= "Accept-Language: en-us, en;q=0.50\r\n";
    $request .= "Accept-Encoding: gzip, deflate, compress;q=0.9\r\n";
    $request .= "Accept-Charset: ISO-8859-1, utf-8;q=0.66, *;q=0.66\r\n";
    $request .= "Keep-Alive: 300\r\n";
    $request .= "Connection: keep-alive\r\n";
    $request .= "Referer: $referer\r\n";
    $request .= "Cache-Control: max-age=0\r\n";

    if (     $method == "POST" ) {
            $lenght = strlen( $postValues );
            $request .= "Content-Type: application/x-www-form-urlencoded\r\n";
            $request .= "Content-Length: $lenght\r\n";
            $request .= "\r\n";
            $request .= $postValues;
    }

    for (     $i = 0; $i < $repeat; $i++ ) {
            $socket  = fsockopen( $server, $port, $errno, $errstr, $timeout );
            fputs( $socket, $request );
        if (     $size > 0 ) {
                $ret = fgets( $socket, $size );
        } else {
                $ret = '';
            while ( !    feof( $socket ) ) {
                    $ret .= fgets( $socket, 4096 );
            }
        }
            fclose( $socket );
        echo     "<hr> $i -- $content $ret";
    }
    ?>

    Alejandro Salamanca
    ken at kenmclean dot com dot au
    5 years ago
    Make sure you don't use a double line break ("\r\n\r\n") during the middle of your header, as it appears to end the header.

    This means a \r\n\r\n before "Connection: close\r\n\r\n" will not correctly tell fsockopen to close the request, leading to a max timeout error.

    Some of the code on this page does this. It took me days to figure out. Example:

    <?php
            // Wrong:
            fwrite($fp, "GET / HTTP/1.1\r\n");
            fwrite($fp, "Host: php.net\r\n");
            fwrite($fp, "User-Agent: example\r\n\r\n");
            fwrite($fp, "Connection: Close\r\n\r\n");

            // Right:
            fwrite($fp, "GET / HTTP/1.1\r\n" );
            fwrite($fp, "Host: php.net\r\n");
            fwrite($fp, "User-Agent: example\r\n");
            fwrite($fp, "Connection: Close\r\n\r\n");
    ?>
    ghzero at ghzero dot de
    6 years ago
    note:
    the default protocol - if not given - seems to be tcp://
    robin at pozytron dot com
    10 years ago
    I have found, when using fsockopen() and the POST method, that using HTTP/1.1 is VERY significantly slower than HTTP/1.0 (at least for the server I'm querying, an Orion-based server). Also, using cURL tended to be faster than fsockopen(), though only slightly. For example, here was a recent set of data (for the same exact request in each case):

    cURL: 4.2sec
    fsockopen() HTTP/1.0: 4.9sec
    fsockopen() HTTP/1.1: 19.9sec (!)

    I'm not sure why this was occurring. Perhaps it has something to do with the Orion server, which I have little experience with. However, it was not a fluke, and I double-checked the code to make sure there were no errors.

    EDITORS NOTE: HTTP/1.1 uses persistent connection causing this delay. Use "Connection: close" header to disable it.
    richardaburton at hotmail dot com
    12 years ago
    Improved HTTP/1.1 chunked transfer-encoding example.

    The sample code given below by Jack does not function correctly when run against a recent version of Apache (I'm assuming that this did once work, but from the HTTP/1.1 spec I can only assume if it did work it was based mostly on luck).

    <?php

    $header     = "";
    $response = "";

    // connect
    if (!($request=fsockopen('example.com',80,$errno,$errstr))) exit($errstr);
    else {
           socket_set_timeout($request,10);
           // send request
           fwrite($request,$post);
           // get header
           do $header.=fread($request,1); while (!preg_match('/\\r\\n\\r\\n$/',$header));
           // check for chunked encoding
           if (preg_match('/Transfer\\-Encoding:\\s+chunked\\r\\n/',$header))
          do {
                 $byte = "";
                 $chunk_size="";
             do {
                    $chunk_size.=$byte;
                    $byte=fread($request,1);
             } while (    $byte!="\\r");      // till we match the CR
                 fread($request, 1);         // also drop off the LF
                 $chunk_size=hexdec($chunk_size); // convert to real number
                 $response.=fread($request,$chunk_size);
                 fread($request,2);          // ditch the CRLF that trails the chunk
              } while ($chunk_size);         // till we reach the 0 length chunk (end marker)
           else {
              // check for specified content length
              if (preg_match('/Content\\-Length:\\s+([0-9]*)\\r\\n/',$header,$matches)) {
                 $response=fread($request,$matches[1]);
          } else {
                 // not a nice way to do it (may also result in extra CRLF which trails the real content???)
                 while (!feof($request)) $response .= fread($request, 4096);
          }
       }
           // close connection
           fclose($request);
    }

    // do something useful with the response
    print($header);
    print(    $response);

    ?>

    Richard.
    joe at edwardsconsultants dot com
    12 years ago
    just a quick note for users attempting https and thinking they must resort to curl or alternate methods -
    you can use fsockopen, just read the docs closely.  basically they are saying to use 'ssl://' for a HTTPS (SSL) web request.

    so this would work for authorize.net, and others; even for that paypal IPN - however I think it would be best to leave the site and deal with paypal's form:

    <?php
    $host     = "something.example.com";
    $port = 443;
    $path = "/the/url/path/file.php"; //or .dll, etc. for authnet, etc.

    //you will need to setup an array of fields to post with
    //then create the post string
    $formdata = array ( "x_field" => "somevalue");
    //build the post string
          foreach($formdata AS $key => $val){
            $poststring .= urlencode($key) . "=" . urlencode($val) . "&";
      }
    // strip off trailing ampersand
    $poststring = substr($poststring, 0, -1);

    $fp = fsockopen("ssl://".$host, $port, $errno, $errstr, $timeout = 30);

    if(!    $fp){
    //error tell us
    echo "$errstr ($errno)\n";
      
    }else{

          //send the server request
          fputs($fp, "POST $path HTTP/1.1\r\n");
          fputs($fp, "Host: $host\r\n");
          fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
          fputs($fp, "Content-length: ".strlen($poststring)."\r\n");
          fputs($fp, "Connection: close\r\n\r\n");
          fputs($fp, $poststring . "\r\n\r\n");

          //loop through the response from the server
          while(!feof($fp)) {
        echo     fgets($fp, 4096);
      }
          //close fp - we are done with it
          fclose($fp);
    }
    ?>
    yadiutama_skom at yahoo dot com
    10 years ago
    This is a simple example for sending and retrieve SOAP message by using fsockopen:

    <?php
    $fp     = @fsockopen("www.example.com", 80, $errno, $errstr);
    if (!    $fp) {
        echo     "$errstr ($errno)<br />\n";
    } else {

    $soap_out  = "POST /example/exampleServer.php HTTP/1.0\r\n";
    $soap_out .= "Host: www.example.com\r\n";
    $soap_out .= "User-Agent: MySOAPisOKGuys \r\n";
    $soap_out .= "Content-Type: text/xml; charset=ISO-8859-1\r\n";
    $soap_out .= "Content-Length: 512\r\n\r\n";
    $soap_out .= '<?xml version="1.0" encoding="ISO-8859-1"?>
    <SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body>
    <ns5973:contact xmlns:ns5973="http://tempuri.org">
    <__numeric_0><id  xsi:nil="true"/></__numeric_0>
    </ns5973:contact>
    </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>'    ;

            fputs($fp, $soap_out, strlen($soap_out));  // send request SOAP

            echo "<xmp>".$out."</xmp>";

        while (!    feof($fp)) {
                $soap_in . = fgets($fp, 100);
        }

        echo     "<xmp>$soap_in</xmp>";   //display response SOAP

            fclose($fp);
    }
    ?>

    And this is an example result:

    POST /soap/example/contactServer.php HTTP/1.0
    Host: www.example.com
    User-Agent: MySOAPisOKGuys
    Content-Type: text/xml; charset=ISO-8859-1
    Content-Length: 512
    <?xml version="1.0" encoding="ISO-8859-1"?>
    <SOAP-ENV:Envelope
    SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body><ns5973:contact
    xmlns:ns5973="http://tempuri.org"><__numeric_0><id
    xsi:nil="true"/></__numeric_0></ns5973:contact>
    </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>

    HTTP/1.1 200 OK
    Date: Thu, 06 Apr 2006 07:03:26 GMT
    Server: Apache/1.3.23 (Win32)
    X-Powered-By: PHP/4.1.1
    X-SOAP-Server: MySOAPisOKGuys
    Content-Length: 625
    Connection: close
    Content-Type: text/xml; charset=ISO-8859-1
    <?xml version="1.0" encoding="ISO-8859-1"?>
    <SOAP-ENV:Envelope
    SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body><ns1:contactResponse
    xmlns:ns1="http://tempuri.org">
    <return xsi:type="xsd:string">
    </return>
    </ns1:contactResponse>
    </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>
    sir_reality2001 at yahoo dot com
    12 years ago
    <?php
    // This script is an example of posting multiple files using
    // fsockopen.
    // The tricky part is making sure the HTTP headers and file boundaries are acceptable to the target webserver.
    // This script is for example purposes only and could/should be improved upon.

    $host='targethost';
    $port=80;
    $path='/test/socket/file_upload/receive_files.php';

    // the file you want to upload
    $file_array[0] = "dingoboy.gif"; // the file
    $file_array[1] = "dingoboy2.gif"; // the file
    $file_array[2] = "dingoboy3.gif"; // the file
    $content_type = "image/gif"; // the file mime type
    //$content_type = "text/plain";
    //echo "file_array[0]:$file_array[0]<br><br>";

    srand((double)microtime()*1000000);
    $boundary = "---------------------------".substr(md5(rand(0,32000)),0,10);

    $data = "--$boundary";

    for(    $i=0;$i<count($file_array);$i++){
           $content_file = join("", file($file_array[$i]));

           $data.="
    Content-Disposition: form-data; name=\"file"    .($i+1)."\"; filename=\"$file_array[$i]\"
    Content-Type:     $content_type

    $content_file
    --    $boundary";

    }

    $data.="--\r\n\r\n";

    $msg =
    "POST $path HTTP/1.0
    Content-Type: multipart/form-data; boundary=    $boundary
    Content-Length: "    .strlen($data)."\r\n\r\n";

    $result="";

    // open the connection
    $f = fsockopen($host, $port);

    fputs($f,$msg.$data);

    // get the response
    while (!feof($f)) $result .= fread($f,32000);

    fclose($f);

    ?>
    Jeremy Saintot
    5 years ago
    Here is my fsockopen-based HTTP request fonction (GET and POST) :

    <?php
    function http_request(
            $verb = 'GET',             /* HTTP Request Method (GET and POST supported) */
            $ip,                       /* Target IP/Hostname */
            $port = 80,                /* Target TCP port */
            $uri = '/',                /* Target URI */
            $getdata = array(),        /* HTTP GET Data ie. array('var1' => 'val1', 'var2' => 'val2') */
            $postdata = array(),       /* HTTP POST Data ie. array('var1' => 'val1', 'var2' => 'val2') */
            $cookie = array(),         /* HTTP Cookie Data ie. array('var1' => 'val1', 'var2' => 'val2') */
            $custom_headers = array(), /* Custom HTTP headers ie. array('Referer: http://localhost/ */
            $timeout = 1,           /* Socket timeout in seconds */
            $req_hdr = false,          /* Include HTTP request headers */
            $res_hdr = false           /* Include HTTP response headers */
            )
    {
            $ret = '';
            $verb = strtoupper($verb);
            $cookie_str = '';
            $getdata_str = count($getdata) ? '?' : '';
            $postdata_str = '';

        foreach (    $getdata as $k => $v)
                        $getdata_str .= urlencode($k) .'='. urlencode($v) . '&';

        foreach (    $postdata as $k => $v)
                $postdata_str .= urlencode($k) .'='. urlencode($v) .'&';

        foreach (    $cookie as $k => $v)
                $cookie_str .= urlencode($k) .'='. urlencode($v) .'; ';

            $crlf = "\r\n";
            $req = $verb .' '. $uri . $getdata_str .' HTTP/1.1' . $crlf;
            $req .= 'Host: '. $ip . $crlf;
            $req .= 'User-Agent: Mozilla/5.0 Firefox/3.6.12' . $crlf;
            $req .= 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' . $crlf;
            $req .= 'Accept-Language: en-us,en;q=0.5' . $crlf;
            $req .= 'Accept-Encoding: deflate' . $crlf;
            $req .= 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' . $crlf;
       
        foreach (    $custom_headers as $k => $v)
                $req .= $k .': '. $v . $crlf;
           
        if (!empty(    $cookie_str))
                $req .= 'Cookie: '. substr($cookie_str, 0, -2) . $crlf;
           
        if (    $verb == 'POST' && !empty($postdata_str))
        {
                $postdata_str = substr($postdata_str, 0, -1);
                $req .= 'Content-Type: application/x-www-form-urlencoded' . $crlf;
                $req .= 'Content-Length: '. strlen($postdata_str) . $crlf . $crlf;
                $req .= $postdata_str;
        }
        else     $req .= $crlf;
       
        if (    $req_hdr)
                $ret .= $req;
       
        if ((    $fp = @fsockopen($ip, $port, $errno, $errstr)) == false)
            return     "Error $errno: $errstr\n";
       
            stream_set_timeout($fp, 0, $timeout * 1000);
       
            fputs($fp, $req);
        while (    $line = fgets($fp)) $ret .= $line;
            fclose($fp);
       
        if (!    $res_hdr)
                $ret = substr($ret, strpos($ret, "\r\n\r\n") + 4);
       
        return     $ret;
    }
    ?>

    Example usages :

    <?php
    echo http_request('GET', 'www.php.net');
    echo     http_request('GET', 'www.php.net', 80, '/manual/en/function.phpinfo.php');
    echo     http_request('GET', 'www.php.net', 80, '/manual/en/function.phpinfo.php', array('get1' => 'v_get1'), array(), array('cookie1' => 'v_cookie1'), array('X-My-Header' => 'My Value'));
    ?>

    [EDIT BY danbrown AT php DOT net: Contains a bugfix provided by "Wrinkled Cheese" on 24-JUN-2011 to fix the $getdata foreach() loop; another bugfix provided by Suat Secmen on 12-JAN-2012 to fix a $timeout = 1000, then stream_set_timeout($fp, 0, $timeout * 1000), equaling 1,000 seconds.]
    brage (a t) jeffnappi (d.o.t) commie
    12 years ago
    thought you guys may appreciate this function, allows you to pass an array of urls to download and does so simultaneously using non-blocking sockets, then returns the data in an array.

    <?php
    // function connects to an array of URLS at the same time
    // and returns an array of results.

    function multiHTTP ($urlArr) {
    $sockets = Array(); // socket array!
    $urlInfo = Array(); // info arr
    $retDone = Array();
    $retData = Array();
    $errno   = Array();
    $errstr  = Array();
    for (    $x=0;$x<count($urlArr);$x++) {
          $urlInfo[$x] = parse_url($urlArr[$x]);
          $urlInfo[$x][port] = ($urlInfo[$x][port]) ? $urlInfo[$x][port] : 80;
          $urlInfo[$x][path] = ($urlInfo[$x][path]) ? $urlInfo[$x][path] : "/";
          $sockets[$x] = fsockopen($urlInfo[$x][host], $urlInfo[$x][port],
                                   $errno[$x], $errstr[$x], 30);
          socket_set_blocking($sockets[$x],FALSE);
          $query = ($urlInfo[$x][query]) ? "?" . $urlInfo[$x][query] : "";
          fputs($sockets[$x],"GET " . $urlInfo[$x][path] . "$query HTTP/1.0\r\nHost: " .
                $urlInfo[$x][host] . "\r\n\r\n");
    }
    // ok read the data from each one
    $done = false;
    while (!    $done) {
      for (    $x=0; $x < count($urlArr);$x++) {
       if (!    feof($sockets[$x])) {
        if (    $retData[$x]) {
             $retData[$x] .= fgets($sockets[$x],128);
        } else {
             $retData[$x] = fgets($sockets[$x],128);
        }
       } else {
            $retDone[$x] = 1;
       }
      }
          $done = (array_sum($retDone) == count($urlArr));
    }
    return     $retData;
    }
    ?>
    xbensemhoun at t-systems dot fr
    12 years ago
    To make a telnet connection with a Cisco router:

    <?php
    $cfgServer     = "nnn.nnn.nnn.nnn";  //IP of your router
    $cfgPort    = 23;                //port, 22 if SSH
    $cfgTimeOut = 10;

    $usenet = fsockopen($cfgServer, $cfgPort, $errno, $errstr, $cfgTimeOut);

    if(!    $usenet)
            {
            echo     "Connexion failed\n";
            exit();
            }
    else
            {
            echo     "Connected\n<BR>";
                fputs ($usenet, "toto\r\n");
                fputs ($usenet, "en\r\n");
                fputs ($usenet, "tutu\r\n");
                fputs ($usenet, "exit\r\n");
            while (!    feof($usenet))
                    {
                    echo     ". ".fgets($usenet, 128)."<BR>\n";
                    }
            }
    ?>

    Then you will have:
    Connected
    . ��������
    .
    . User Access Verification
    .
    . Password:
    . testXB>en
    . Password:
    . testXB#exit
    .
    walter
    6 years ago
    For some reason the default FreeBSD 7.0 port (jailed environment) breaks fsockopen() on SSL URLs, returning a constant stream of nothing!  In my case this resulted in php-cgi bringing down lighttpd completely, in rapid time!  Avoid FreeBSD/jails/fsockopen + SSL.  Use curl_init() instead.
    richard dot lajaunie at cote-azur dot cci dot fr
    10 years ago
    <?php
    /************************************************************
    * Author: Richard Lajaunie
    * Mail : richard.lajaunie@cote-azur.cci.fr
    *
    * subject : this script retreive all mac-addresses on all ports
    * of a Cisco 3548 Switch by a telnet connection
    *
    * base on the script by: xbensemhoun at t-systems dot fr
    **************************************************************/

    if ( array_key_exists(1, $argv) ){
           $cfgServer = $argv[1];
    }else{
       echo     "ex: 'php test.php 10.0.0.0' \n";
       exit;
    }

    $cfgPort    = 23;                //port, 22 if SSH
    $cfgTimeOut = 10;

    $usenet = fsockopen($cfgServer, $cfgPort, $errno, $errstr), $cfgTimeOut);

    if(!    $usenet){
           echo     "Connexion failed\n";
           exit();
    }else{
           echo     "Connected\n";
               fputs ($usenet, "password\r\n");
               fputs ($usenet, "en\r\n");
               fputs ($usenet, "password\r\n");
               fputs ($usenet, "sh mac-address-table\r\n");
               fputs ($usenet, " "); // this space bar is this for long output
         
           // this skip non essential text
               $j = 0;
           while (    $j<16){
               fgets($usenet, 128);
               $j++;
           }
           stream_set_timeout($usenet, 2); // set the timeout for the fgets
           $j = 0;
           while (!    feof($usenet)){
               $ret = fgets($usenet, 128);
               $ret = str_replace("\r", '', $ret);
               $ret = str_replace("\n", "", $ret);
           if  (    ereg("FastEthernet", $ret)){
               echo     "$ret \n";
           }
           if (    ereg('--More--', $ret) ){
                   fputs ($usenet, " "); // for following page
               }
               $info = stream_get_meta_data($usenet);
           if (    $info['timed_out']) {
                   $j++;
           }
           if (    $j >2){
                   fputs ($usenet, "lo");
               break;
           }
       }
    }
    echo     "End.\r\n";
    ?>
    jabeba at web dot de
    8 years ago
    If you have to use a proxy to make requests outside of your local network, you may use this class:

    <?php
    /*
    *
    * No Proxy Authentification Implemented; PHP 5
    *
    */

    class RemoteFopenViaProxy {

        private     $result;
        private     $proxy_name;
        private     $proxy_port;
        private     $request_url;

        public function     get_proxy_name() {
            return     $this->proxy_name;
        }

        public function     set_proxy_name($n) {
                $this->proxy_name = $n;
        }

        public function     get_proxy_port() {
            return     $this->proxy_port;
        }

        public function     set_proxy_port($p) {
                $this->proxy_port = $p;
        }

        public function     get_request_url() {
            return     $this->request_url;
        }

        public function     set_request_url($u) {
                $this->request_url = $u;
        }

        public function     get_result() {
            return     $this->result;
        }

        public function     set_result($r) {
                $this->result = $r;
        }

        private function     get_url_via_proxy() {

                $proxy_fp = fsockopen($this->get_proxy_name(), $this->get_proxy_port());

            if (!    $proxy_fp) {
                return     false;
            }
                fputs($proxy_fp, "GET " . $this->get_request_url() . " HTTP/1.0\r\nHost: " . $this->get_proxy_name() . "\r\n\r\n");
            while (!    feof($proxy_fp)) {
                    $proxy_cont .= fread($proxy_fp, 4096);
            }
                fclose($proxy_fp);
                $proxy_cont = substr($proxy_cont, strpos($proxy_cont, "\r\n\r\n") + 4);
            return     $proxy_cont;

        }

        private function     get_url($url) {
                $fd = @ file($url);
            if (    $fd) {
                return     $fd;
            } else {
                return     false;
            }
        }

        private function     logger($line, $file) {
                $fd = fopen($file . ".log", "a+");
                fwrite($fd, date("Ymd G:i:s") . " - " . $file . " - " . $line . "\n");
                fclose($fd);
        }

        function     __construct($url, $proxy_name = "", $proxy_port = "") {

                $this->set_request_url($url);
                $this->set_proxy_name($proxy_name);
                $this->set_proxy_port($proxy_port);

        }

        public function     request_via_proxy() {

                $this->set_result($this->get_url_via_proxy());
            if (!    $this->get_result()) {
                    $this->logger("FAILED: get_url_via_proxy(" . $this->get_proxy_name() . "," . $this->get_proxy_port() . "," . $this->get_request_url() . ")", "RemoteFopenViaProxyClass.log");
            }
        }

        public function     request_without_proxy() {

                $this->set_result($this->get_url($this->get_request_url()));
            if (!    $this->get_result()) {
                    $this->logger("FAILED: get_url(" . $url . ")", "RemoteFopenViaProxyClass.log");
            }
        }
    }
    ?>

    Use it this way:

    <?php
    // call constructor
    $obj = new RemoteFopenViaProxy($insert_request_url, $insert_proxy_name, $insert_proxy_port);
    // change settings after object generation
    $obj->set_proxy_name($insert_proxy_name);
    $obj->set_proxy_port($insert_proxy_port);
    $obj->set_request_url($insert_request_url);
    $obj->request_via_proxy();
    echo     $obj->get_result();
    ?>

    If there are errors during execution, the script tries to write some useful information into a log file.
    warezthebeef at gmail dot com
    8 years ago
    I ran into a problem where I needed to make an fsockopen() style connection from one specific ip address on a server with multiple ip aliases. Unfortunately fsockopen() does not allow the specification of a source address making it unsuitable. I could not find any other solutions elsewhere so here is mine for those with php 5.1.0 or greater.

    <?php
    // connect to the internet using the '192.168.0.100' IP
    $opts = array('socket' => array('bindto' => '192.168.0.100:0'));

    $context = stream_context_create($opts);

    $fp = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $context);
    ?>

    Now $fp can be used like a resource handle returned by a vanilla fsockopen() call!
    anarchy
    8 years ago
    The DEFAULT stream timeout is set according to default_socket_timeout in your php.ini file.  Took forever for me to dig that up....
    saul dot dobney at dobney dot com
    11 years ago
    If you are using fsockopen to access webpage, but come across a redirect (Location: ) in the header and want to find and follow the redirect as in this snippet:

    <?php
    while (!feof($fp)) {
           $line=fgets($fp, 1024);               
       if (    stristr($line,"location:")!="") {
            $redirect=preg_replace("/location:/i","",$line);
       }
    }
    ?>

    Then don't forget to <?php $redirect = trim($redirect); ?> before trying to follow this new link as $redirect actually has a \r\n on the end of it and won't give you a valid path in the next iteration otherwise. A six hour bug.

    Saul Dobney
    admin at lab-9 dot com
    7 years ago
    When you try to POST/GET requests via HTTPS over SSL/TLS you should notice this:

    <?php
    // preconditions
    $port = 80 | 443
    $host     = "www.example.com";
    $method = "POST" | "GET";
    $contenttype = "text/html" | "text/plain" | "text/xml" | ...;
    $data = "<something>";

    // script
    if($port == 443)
              $sslhost = "ssl://".$host;
    else
              $sslhost = $host;
    $fp = fsockopen($sslhost, $port);
    fputs($fp, "$method $path HTTP/1.1\r\n");
    fputs($fp, "Host: $host\r\n");
    fputs($fp, "Content-type: $contenttype\r\n");
    fputs($fp, "Content-length: ".strlen($data)."\r\n");
    fputs($fp, "Connection: close\r\n");
    fputs($fp, "\r\n");
    ?>

    The server usually does not understand the HTTP-header "Host: XXX" if you provide it with the trailing "ssl://" used by fsockopen(); If you do it anyway you probably get a HTTP 400 back as response. :-)
    v13+phpnet at it dot teithe dot gr
    9 years ago
    The following function performs pop3 authentication. Returns NULL on error, or true/false to indicate username/password matching:

    $address is the hostname of the server and $ssl is a boolean that indicates whether an SSL connection is requested.

    <?php
    function pop3authCheck($username, $password, $address, $ssl)
    {
        if (    $ssl)
                $uri="ssl://$address:995";
        else
                $uri="tcp://$address:110";

            $fp=fsockopen($uri);

        if (!    $fp)
            return(    NULL);

            $st=fgets($fp, 512);
        if (    substr($st, 0, 3)!="+OK")
        {
                fclose($fp);
            return(    NULL);
        }

            $st="USER $username\n";
        if (    fwrite($fp, $st)!=strlen($st))
        {
                fclose($fp);
            return(    NULL);
        }

            $st=fgets($fp, 512);
        if (    substr($st, 0, 3)!="+OK")
        {
                fclose($fp);
            return(    NULL);
        }

            $st="PASS $password\n";
        if (    fwrite($fp, $st)!=strlen($st))
        {
                fclose($fp);
            return(    NULL);
        }

            $st=fgets($fp, 512);
            fclose($fp);
        if (    substr($st, 0, 3)=="+OK")
            return(    true);
        else if (    substr($st, 0, 4)=="+ERR")
            return(    false);
        else
            return(    NULL);
    }
    ?>
    edwin at bitstorm dot org
    11 years ago
    Here's a function to just fetch the contents behind an URL.

    <?php
    function fetchURL( $url ) {
            $url_parsed = parse_url($url);
            $host = $url_parsed["host"];
            $port = $url_parsed["port"];
        if (    $port==0)
                $port = 80;
            $path = $url_parsed["path"];
        if (    $url_parsed["query"] != "")
                $path .= "?".$url_parsed["query"];

            $out = "GET $path HTTP/1.0\r\nHost: $host\r\n\r\n";

            $fp = fsockopen($host, $port, $errno, $errstr, 30);

            fwrite($fp, $out);
            $body = false;
        while (!    feof($fp)) {
                $s = fgets($fp, 1024);
            if (     $body )
                    $in .= $s;
            if (     $s == "\r\n" )
                    $body = true;
        }
       
            fclose($fp);
       
        return     $in;
    }
    ?>
    michiel at parse dot nl
    11 years ago
    The following snippet allows you to retrieve the title of a page.

    Great for rewriting auto-url detectors to display the actual title rather then http://...

    <?php
    echo get_url_title("http://www.php.net/cal.php?id=409");

    function     get_url_title($url, $timeout = 2)
    {
            $url = parse_url($url);

        if(!    in_array($url['scheme'],array('','http')))
            return;

            $fp = fsockopen ($url['host'], ($url['port'] > 0 ? $url['port'] : 80), $errno, $errstr, $timeout);
        if (!    $fp)
        {
            return;
                // echo "$errstr ($errno)<br>\n";
            }
        else
        {
                fputs ($fp, "GET /".$url['path'].($url['query'] ? '?'.$url['query'] : '')." HTTP/1.0\r\nHost: ".$url['host']."\r\n\r\n");
                $d = '';
            while (!    feof($fp))
            {
                    $d .= fgets ($fp,2048);

                if(    preg_match('~(</head>|<body>|(<title>\s*(.*?)\s*</title>))~i', $d, $m))
                    break;
            }
                fclose ($fp);

            return     $m[3];
        }
    }
    ?>
    verran at descent-rangers dot com
    13 years ago
    I was tearing my hair out for a week trying to figure out how to do this.

    If you use fsockopen with a service that doesn't have an EOF, or you try to read beyond EOF or line break, PHP can hang completely.

    In my case, I was trying to write a class that talks to Kali servers (www.kali.net) to get a list of people on the chat server. To keep PHP from hanging due to the above, I discovered this:

    <?php
            class kali_utils {
            function     games_list($kali_server_ip, $kali_server_port) {
                    $result = array();
                    $fp = fsockopen($kali_server_ip, $kali_server_port, $errno, $error, 30);
                if (!    $fp) {
                        $result["errno"] = $errno;
                        $result["error"] = $error;
                }
                else {
                        fputs($fp, "KALIQ");
                        $header = fread($fp, 5);
                        $bytes_left = socket_get_status($fp);
                    if (    $bytes_left > 0) {
                            $result["results"] = fread($fp, $bytes_left["unread_bytes"]);
                    }
                    else {
                            $result["results"] = "";
                    }
                        fclose($fp);
                }
                return     $result;
            }
        }
    ?>

    When I send the request packet, I get a response packet of length 5. Then I call socket_get_status() and use the unread_bytes key from it to know how far to fread from the socket. Works very good.

    I've only used this on PHP 4.2.1 so far.
    perrya at shoalhaven dot nsw dot gov dot au
    2 months ago
    on my FreeBSD vm, with Joomla, I was getting the error

    fsockopen(): unable to connect to ssl://localhost:443 (Unknown error)

    when using a contact form and also the module updating process.

    After reading other notes on here, regarding certificate validation, I installed the port ca_root_nss

    (Root certificates from certificate authorities included in the Mozilla
    NSS library and thus in Firefox and Thunderbird.)

    Now it works
    Charles Torvalds
    3 years ago
    Rewrite/Update of king dot macro's DNS lookups function.
    <?php

    function gethostbyaddr_timeout( $ip, $dns, $timeout = 3 ) {
            // src: http://www.askapache.com/php/php-fsockopen-dns-udp.html
       
        // random transaction number (for routers etc to get the reply back)
            $data = rand( 10, 77 ) . "\1\0\0\1\0\0\0\0\0\0";
       
            // octals in the array, keys are strlen of bit
            $bitso = array("","\1","\2","\3" );
        foreach(     array_reverse( explode( '.', $ip ) ) as $bit ) {
                $l=strlen($bit);
                $data.="{$bitso[$l]}".$bit;
        }
       
            // and the final bit of the request
            $data .= "\7in-addr\4arpa\0\0\x0C\0\1";
           
            // create UDP socket
            $errno = $errstr = 0;
            $fp = fsockopen( "udp://{$dns}", 53, $errno, $errstr, $timeout );
        if( !     $fp || ! is_resource( $fp ) )
            return     $errno;

        if(     function_exists( 'socket_set_timeout' ) ) {
                socket_set_timeout( $fp, $timeout );
        } elseif (     function_exists( 'stream_set_timeout' ) ) {
                stream_set_timeout( $fp, $timeout );
        }

            // send our request (and store request size so we can cheat later)
            $requestsize = fwrite( $fp, $data );
            $max_rx = $requestsize * 3;
       
            $start = time();
            $responsesize = 0;
        while (     $rxed < $max_rx && ( ( time() - $start ) < $timeout ) && ($b = fread( $fp, 1 ) ) !== false ) {
                $responsesize++;
                $response .= $b;
        }
        echo     "[tx: $requestsize bytes]  [rx: {$responsesize} bytes]";

            // hope we get a reply
            if ( is_resource( $fp ) )
                fclose( $fp );

            // if empty response or bad response, return original ip
            if ( empty( $response ) || bin2hex( substr( $response, $requestsize + 2, 2 ) ) != '000c' )
            return     $ip;
           
            // set up our variables
            $host = '';
            $len = $loops = 0;
       
            // set our pointer at the beginning of the hostname uses the request size from earlier rather than work it out
            $pos = $requestsize + 12;
        do {
                // get segment size
                $len = unpack( 'c', substr( $response, $pos, 1 ) );
           
                // null terminated string, so length 0 = finished - return the hostname, without the trailing .
                if ( $len[1] == 0 )
                return     substr( $host, 0, -1 );
               
                // add segment to our host
                $host .= substr( $response, $pos + 1, $len[1] ) . '.';
           
                // move pointer on to the next segment
                $pos += $len[1] + 1;
           
                // recursion protection
                $loops++;
        }
        while (     $len[1] != 0 && $loops < 20 );
       
            // return the ip in case
            return $ip;
    }

    ?>
    kexianbin at diyism dot com
    4 years ago
    My recursive unchunk function:

    <?php
    function unchunk($result)
             {return     preg_replace('/([0-9A-F]+)\r\n(.*)/sie',
                                      '($cnt=@base_convert("\1", 16, 10))
                                   ?substr(($str=@strtr(\'\2\', array(\'\"\'=>\'"\', \'\\\\0\'=>"\x00"))), 0, $cnt).unchunk(substr($str, $cnt+2))
                                   :""
                                  '    ,
                                      $result
                                     );
             }
    ?>
    gratcypalma at gmail dot com
    5 years ago
    <?php
    /*
    this script i used for remote my PvPGN Server, to check email user.
    not good, but it work.
    */

    set_time_limit(0);
    $host   = 'host';
    $port   = 'port';
    $user   = 'user';
    $pass   = 'pass';
    $socket = fsockopen($host, $port) or die('Could not connect to: '.$host);
    $userdota = "palma";
    if(    $socket)
    {
            sendcmd("\r",$socket);
            $status = "open"; // set status open
           
            while($status=="open") //while we are connected to the server
              {    
                     $line = @fgets($socket, 1024) ;
                      /////////////login////////////////   
                    if (strstr($line, "there is no guest account"))
                  {
                         sendcmd($user."\r\n",$socket);
                         sendcmd($pass."\r\n",$socket);
                  }   
                    //////////////send command ////////////////////
                    if (strstr($line,"Your unique name: ".$user))
                  {      sendcmd("/finger ".$userdota."\r\n",$socket);
                  }
               
                    //////////////get email////////////////////
                    if (strstr($line,"email:")) // if respone server write "email:"
                      { 
                         $pattern = '/email:(.*) ,/';
                         preg_match($pattern, $line, $matches);
                         fclose($socket);
                         $status="close"; // status close
                         $matches=str_replace(" ","", $matches);
                         $matches=str_replace(",is_operator:0,is_admin:0,","", $matches);
                         $matches=str_replace("email:","", $matches);
                     print     $matches[0];                
                         $email=$matches[0];
                  }
                if (    strstr($line,"ERROR: Invalid user.")) // if respone server write "ERROR: Invalid user."
                      { 
                    
                         fclose($socket);
                         $status="close";
                         $error ="Invalid User";    // error message
                      }
               
                    ////////////login failed //////////////////////////            
                    if (strstr($line, "Login failed")) // if respone server write "Login failed"
                      {
                         $error = "Login Failed";    // error message
                         fclose($socket);
                         $status="close";
                  }
               
                    flush(); // close
         
              }
             
    }
    function     sendcmd($cmd,$socket) // send command function
    {
          fputs($socket, $cmd, strlen($cmd));
    }
    ?>
    oliver dot christen at camptocamp dot com
    6 years ago
    When downloading large files, it is not really efficient to put the whole server answer in memory before parsing the data to remove the header parts. Here is a simple way to do it while writing the data as it arrive:

    <?php

    // $socket is a valid fsockopen handle

    $out = '';
    $headerendfound = false;
    $fp = fopen($fileTarget, 'w');
    $buffer = '';
    while (!    feof($socket)) {
            $out = fgets ($socket,16384);
        if (    $headerendfound) {
                fwrite($fp, $out);
            print     '.';
        }
        if (!    $headerendfound) {
                $buffer .= $out;
            print     "searching for header\n";
                $headerend = strpos($buffer, "\r\n\r\n");
            if (    $headerend !== false) {
                    $headerendfound = true;
                    fwrite($fp, substr($buffer, $headerend+4));
                    $buffer = '';
            }
        }
    }
    fclose($fp);
    fclose($socket);

    ?>
    Doug
    7 years ago
    [NOTE BY danbrown AT php DOT net: Updated version.  Contains author-submitted bug fixes.]

    Here is a way to get an array of cities / states for any zip code anywhere in the US.  This example uses a $_GET variable to specify which zip code, but you can get it from any source you wish.  This will return actual and acceptable zip code cities (according to USPS), but can be easily modified to include just the actual city.

    <?php

    if($_GET['zip'])
    {
        if(!(    $fp = fsockopen('zip4.usps.com', 80, $errno, $errstr)))
            echo     'Could not connect to USPS! Error number: ' . $errno . '(' . $errstr . ')';

        else
        {
                $poststring =

                    "GET /zip4/zcl_3_results.jsp?zip5=" . $_GET['zip'] . " HTTP/1.0\r\n" .
                    "Connection: close\r\n\r\n";

                fputs($fp, $poststring);

                $buffer = '';

            while(!    feof($fp))
                    $buffer .= fgets($fp, 128);

                fclose($fp);

                preg_match('/Actual City name(.*)/s', $buffer, $match);

                $temp = explode('Not Acceptable', $match[1]);

                // Capture city/state combination for all valid cities

                preg_match_all('/headers="pre">(?:<b>)?([\w|\s]+), (\w+)/', $temp[0], $acceptable, PREG_SET_ORDER);

                $values = array();

            foreach(    $acceptable as $value)

                    $values[] =

                    array
                    (
                            'city' => $value[1],
                            'state' => $value[2]
                    );

            if(    count($values) == 0)
                echo     'Zip could not be found in the database!';
        }
    }
    else
        echo     'Please specify a zip!';

    ?>
    laisebrown at gmail dot com
    7 years ago
    When you're connecting through a proxy server you can't rely on fsockopen returning false to indicate that the connection has failed. (This also applies to fgets and fwrite.)

    To check whether the proxy succeeded in contacting the real target host, you need to look for the http response code in the headers that get returned. Typically, if the proxy was unable to reach the host, you'll find a line containing something like:
    HTTP/1.0 503 Service Unavailable
    Anonymous
    7 years ago
    "system level connect()" is not further documented inside the php documentation so it is hard to find out more about error numbers.

    someone suggest a more system-close way to find out more about error numbers here: http://www.askapache.com/php/fsockopen-socket.html (an interesting read about fsockopen anyway).

    in my case i could debug to the fact that fsocketopen error number 16 was resulted in the inpossibility to resolve a hostname.
    andrew at enigma-pro dot com
    7 years ago
    Notice using "tcp" insted of "http"
    <?php
    fsockopen    ("tcp://example.net",80 , $errno, $errstr, 30);
    ?>
    mikey at badpenguins dot com
    7 years ago
    My $0.02 on handling chunked transfer encoded output...  Has rudimentary error handling.

    <?php
    //
    // Example usage...
    //
    $server  = '127.0.0.1';
    $port    = '80';
    $uri     = '/cgi-bin/random-cgi';
    $content = 'Your post content...';

    $post_results = httpPost($server,$port,$uri,$content);
    if (!    is_string($post_results)) {
        die(    'uh oh, something went wrong');
        } else {
        die(    'Here are your results: ' . $post_results);
        }

    //
    // Post provided content to an http server and optionally
    // convert chunk encoded results.  Returns false on errors,
    // result of post on success.  This example only handles http,
    // not https.
    //
    function httpPost($ip=null,$port=80,$uri=null,$content=null) {
        if (empty(    $ip))         { return false; }
        if (!    is_numeric($port)) { return false; }
        if (empty(    $uri))        { return false; }
        if (empty(    $content))    { return false; }
            // generate headers in array.
            $t   = array();
            $t[] = 'POST ' . $uri . ' HTTP/1.1';
            $t[] = 'Content-Type: text/html';
            $t[] = 'Host: ' . $ip . ':' . $port;
            $t[] = 'Content-Length: ' . strlen($content);
            $t[] = 'Connection: close';
            $t   = implode("\r\n",$t) . "\r\n\r\n" . $content;
            //
        // Open socket, provide error report vars and timeout of 10
        // seconds.
        //
            $fp  = @fsockopen($ip,$port,$errno,$errstr,10);
            // If we don't have a stream resource, abort.
            if (!(get_resource_type($fp) == 'stream')) { return false; }
            //
        // Send headers and content.
        //
            if (!fwrite($fp,$t)) {
                fclose($fp);
            return     false;
            }
            //
        // Read all of response into $rsp and close the socket.
        //
            $rsp = '';
        while(!    feof($fp)) { $rsp .= fgets($fp,8192); }
            fclose($fp);
            //
        // Call parseHttpResponse() to return the results.
        //
            return parseHttpResponse($rsp);
        }

    //
    // Accepts provided http content, checks for a valid http response,
    // unchunks if needed, returns http content without headers on
    // success, false on any errors.
    //
    function parseHttpResponse($content=null) {
        if (empty(    $content)) { return false; }
            // split into array, headers and content.
            $hunks = explode("\r\n\r\n",trim($content));
        if (!    is_array($hunks) or count($hunks) < 2) {
            return     false;
            }
            $header  = $hunks[count($hunks) - 2];
            $body    = $hunks[count($hunks) - 1];
            $headers = explode("\n",$header);
        unset(    $hunks);
        unset(    $header);
        if (!    verifyHttpResponse($headers)) { return false; }
        if (    in_array('Transfer-Encoding: chunked',$headers)) {
            return     trim(unchunkHttpResponse($body));
            } else {
            return     trim($body);
            }
        }

    //
    // Validate http responses by checking header.  Expects array of
    // headers as argument.  Returns boolean.
    //
    function validateHttpResponse($headers=null) {
        if (!    is_array($headers) or count($headers) < 1) { return false; }
        switch(    trim(strtolower($headers[0]))) {
            case     'http/1.0 100 ok':
            case     'http/1.0 200 ok':
            case     'http/1.1 100 ok':
            case     'http/1.1 200 ok':
                return     true;
            break;
            }
        return     false;
        }

    //
    // Unchunk http content.  Returns unchunked content on success,
    // false on any errors...  Borrows from code posted above by
    // jbr at ya-right dot com.
    //
    function unchunkHttpResponse($str=null) {
        if (!    is_string($str) or strlen($str) < 1) { return false; }
            $eol = "\r\n";
            $add = strlen($eol);
            $tmp = $str;
            $str = '';
        do {
                $tmp = ltrim($tmp);
                $pos = strpos($tmp, $eol);
            if (    $pos === false) { return false; }
                $len = hexdec(substr($tmp,0,$pos));
            if (!    is_numeric($len) or $len < 0) { return false; }
                $str .= substr($tmp, ($pos + $add), $len);
                $tmp  = substr($tmp, ($len + $pos + $add));
                $check = trim($tmp);
            } while(!empty(    $check));
        unset(    $tmp);
        return     $str;
        }

    ?>
    huli0401 at gmail dot com
    8 years ago
    <?php
    // Check for new version
            $current_version = explode('.', '1.0.00');
            $minor_revision = (int) $current_version[2];

            $errno = 0;
            $errstr = $version_info = '';

        if (    $fsock = fsockopen("www.exanmple.eu", 80, $errno, $errstr, 30))
        {
            @    fputs($fsock, "GET /ver.txt HTTP/1.1\r\n");
            @    fputs($fsock, "HOST: www.example.eu\r\n");
            @    fputs($fsock, "Connection: close\r\n\r\n");

                $get_info = false;
            while (!@    feof($fsock))
            {
                if (    $get_info)
                {
                        $version_info .= @fread($fsock, 1024);
                }
                else
                {
                    if (@    fgets($fsock, 1024) == "\r\n")
                    {
                            $get_info = true;
                    }
                }
            }
            @    fclose($fsock);

                $version_info = explode("\n", $version_info);
                $latest_head_revision = (int) $version_info[0];
                $latest_minor_revision = (int) $version_info[2];
                $latest_version = (int) $version_info[0] . '.' . (int) $version_info[1] . '.' . (int) $version_info[2];

            if (    $latest_head_revision == 2 && $minor_revision == $latest_minor_revision)
            {
                    $version_info = '<p style="color:green">OK</p>';
            }
            else
            {
                    $version_info = '<p style="color:red">neaktualne';
                    $version_info .= '<br />'Latest_version_info' . $latest_version) . ' ' . sprintf(Current_version_info'. '1.0.00') . '</p>';
            }
        }
        else
        {
            if (    $errstr)
            {
                    $version_info = '<p style="color:red">' . sprintf(Connect_socket_error) . '</p>';
            }
            else
            {
                    $version_info = '<p>'Socket_functions_disabled'</p>';
            }
        }
       
            $version_info .= '<p>'Mailing_list_subscribe_reminder'</p>';

    echo     $version_info;
    ?>
    Adlez
    8 years ago
    For those of you who do not have cURL, you might want to try this.
    It doesn't have all the functions that cURL has, but it has the basics.
    Please let me know of any bugs or problems.

    <?php
    function open_page($url,$f=1,$c=2,$r=0,$a=0,$cf=0,$pd=""){
    global     $oldheader;
    $url = str_replace("http://","",$url);
    if (    preg_match("#/#","$url")){
          $page = $url;
          $url = @explode("/",$url);
          $url = $url[0];
          $page = str_replace($url,"",$page);
      if (!    $page || $page == ""){
           $page = "/";
      }
          $ip = gethostbyname($url);
    }else{
          $ip = gethostbyname($url);
          $page = "/";
    }
    $open = fsockopen($ip, 80, $errno, $errstr, 60);
    if (    $pd){
          $send = "POST $page HTTP/1.0\r\n";
    }else{
          $send = "GET $page HTTP/1.0\r\n";
    }
    $send .= "Host: $url\r\n";
    if (    $r){
          $send .= "Referer: $r\r\n";
    }else{
      if (    $_SERVER['HTTP_REFERER']){
           $send .= "Referer: {$_SERVER['HTTP_REFERER']}\r\n";
      }
    }
    if (    $cf){
      if (@    file_exists($cf)){
           $cookie = urldecode(@file_get_contents($cf));
       if (    $cookie){
            $send .= "Cookie: $cookie\r\n";
            $add = @fopen($cf,'w');
            fwrite($add,"");
            fclose($add);
       }
      }
    }
    $send .= "Accept-Language: en-us, en;q=0.50\r\n";
    if (    $a){
          $send .= "User-Agent: $a\r\n";
    }else{
          $send .= "User-Agent: {$_SERVER['HTTP_USER_AGENT']}\r\n";
    }
    if (    $pd){
          $send .= "Content-Type: application/x-www-form-urlencoded\r\n"; 
          $send .= "Content-Length: " .strlen($pd) ."\r\n\r\n";
          $send .= $pd;
    }else{
          $send .= "Connection: Close\r\n\r\n";
    }
    fputs($open, $send);
    while (!    feof($open)) {
          $return .= fgets($open, 4096);
    }
    fclose($open);
    $return = @explode("\r\n\r\n",$return,2);
    $header = $return[0];
    if (    $cf){
      if (    preg_match("/Set\-Cookie\: /i","$header")){
           $cookie = @explode("Set-Cookie: ",$header,2);
           $cookie = $cookie[1];
           $cookie = explode("\r",$cookie);
           $cookie = $cookie[0];
           $cookie = str_replace("path=/","",$cookie[0]);
           $add = @fopen($cf,'a');
           fwrite($add,$cookie,strlen($read));
           fclose($add);
      }
    }
    if (    $oldheader){
          $header = "$oldheader<br /><br />\n$header";
    }
    $header = str_replace("\n","<br />",$header);
    if (    $return[1]){
          $body = $return[1];
    }else{
          $body = "";
    }
    if (    $c === 2){
      if (    $body){
           $return = $body;
      }else{
           $return = $header;
      }
    }
    if (    $c === 1){
          $return = $header;
    }
    if (    $c === 3){
          $return = "$header$body";
    }
    if (    $f){
      if (    preg_match("/Location\:/","$header")){
           $url = @explode("Location: ",$header);
           $url = $url[1];
           $url = @explode("\r",$url);
           $url = $url[0];
           $oldheader = str_replace("\r\n\r\n","",$header);
           $l = "&#76&#111&#99&#97&#116&#105&#111&#110&#58";
           $oldheader = str_replace("Location:",$l,$oldheader);
       return     open_page($url,$f,$c,$r,$a,$cf,$pd);
      }else{
       return     $return;
      }
    }else{
      return     $return;
    }
    }
    /////////////
    ////Usage////
    /////////////
    $url = "http://www.php.net";
    $f = 1;
    $c = 2;//1 for header, 2 for body, 3 for both
    $r = NULL;
    $a = NULL;
    $cf = NULL;
    $pd = NULL;
    $page = open_page($url,$f,$c,$r,$a,$cf,$pd);
    print     $page;
    ?>
    bradland at umich dot edu
    8 years ago
    I was having trouble doing an https in fopen and with fsockopen where the address had ssl://.  I was getting error code 114 in the log.  After much research i found that there was some ssl conflict trouble with MySQL 5.0.20-5.0.33.  It had some functions that were interfering with openssl that showed up in the php install.

    http://bugs.mysql.com/bug.php?id=21930
    http://bugs.mysql.com/bug.php?id=19289
    Anonymous
    9 years ago
    I've had issues with some of the handlers for chunked http 1.1 responses.  Here's a method that worked for me, if it works for you as well, then cheers :P

    <?php

            function httpSocketConnection($host, $method, $path, $data)
        {
                $method = strtoupper($method);       
           
            if (    $method == "GET")
            {
                    $path.= '?'.$data;
            }   
           
                $filePointer = fsockopen($host, 80, $errorNumber, $errorString);
           
            if (!    $filePointer)
            {
                    logEvent('debug', 'Failed opening http socket connection: '.$errorString.' ('.$errorNumber.')<br/>\n');
                return     false;
            }

                $requestHeader = $method." ".$path."  HTTP/1.1\r\n";
                $requestHeader.= "Host: ".$host."\r\n";
                $requestHeader.= "User-Agent:      Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0\r\n";
                $requestHeader.= "Content-Type: application/x-www-form-urlencoded\r\n";

            if (    $method == "POST")
            {
                    $requestHeader.= "Content-Length: ".strlen($data)."\r\n";
            }
           
                $requestHeader.= "Connection: close\r\n\r\n";
           
            if (    $method == "POST")
            {
                    $requestHeader.= $data;
            }           

                fwrite($filePointer, $requestHeader);
           
                $responseHeader = '';
                $responseContent = '';

            do
            {
                    $responseHeader.= fread($filePointer, 1);
            }
            while (!    preg_match('/\\r\\n\\r\\n$/', $responseHeader));
           
           
            if (!    strstr($responseHeader, "Transfer-Encoding: chunked"))
            {
                while (!    feof($filePointer))
                {
                        $responseContent.= fgets($filePointer, 128);
                }
            }
            else
            {

                while (    $chunk_length = hexdec(fgets($filePointer)))
                {
                        $responseContentChunk = '';
               
                        logEventToTextFile('debug', $chunk_length);
                        $read_length = 0;
                   
                    while (    $read_length < $chunk_length)
                    {
                            $responseContentChunk .= fread($filePointer, $chunk_length - $read_length);
                            $read_length = strlen($responseContentChunk);
                    }

                        $responseContent.= $responseContentChunk;
                   
                        fgets($filePointer);
                   
                }
               
            }

                logEventToTextFile('debug', $responseContent);
           
           
            return     chop($responseContent);
        }

    ?>
    Duukkis
    10 years ago
    Lots of tries and lots of reading http-headers...

    If you want to post $_POST vars and (in this case) one file named userfile to $remote_server and $remote_url.

    <?php
                // get the necessary data
                $file_name = $_FILES['userfile']['name'];     // the file
                $tmp_name = $_FILES['userfile']['tmp_name'];     // the file
                $content_type = $_FILES['userfile']['type'];     // the file mime type
           
                srand((double)microtime()*1000000);
                $boundary = "---------------------".substr(md5(rand(0,32000)),0,10);
           
                // Build the header
                $header = "POST $remote_url HTTP/1.0\r\n";
                $header .= "Host: $remote_server\r\n";
                $header .= "Content-type: multipart/form-data, boundary=$boundary\r\n";
                // attach post vars
                foreach($_POST AS $index => $value){
                    $data .="--$boundary\r\n";
                    $data .= "Content-Disposition: form-data; name=\"".$index."\"\r\n";
                    $data .= "\r\n".$value."\r\n";
                    $data .="--$boundary\r\n";
            }
                // and attach the file
                $data .= "--$boundary\r\n";
                $content_file = join("", file($tmp_name));
                $data .="Content-Disposition: form-data; name=\"userfile\"; filename=\"$file_name\"\r\n";
                $data .= "Content-Type: $content_type\r\n\r\n";
                $data .= "".$content_file."\r\n";
                $data .="--$boundary--\r\n";
                $header .= "Content-length: " . strlen($data) . "\r\n\r\n";
                         // Open the connection
                $fp = fsockopen($remote_server, 80);
                // then just
                fputs($fp, $header.$data);
                fclose($fp);
    ?>
    ittasks at gmail dot com
    10 years ago
    login to the site prior to downloading page:

    In some wierd situations site security is based on
    ASPSESSION ID and where could be a
    login asp  script in one place, and the actual page with
    information in another place.

    for such cases you have to submit ( POST ) you login and
    password first, when grab ASP session (and also some
    cookies from response, and when use that ASP SESSION in
    second request to the actual page: (i took some parts of
    codes from other ppl)
    <?php
    //submit login form: (url, post data, extra headers (optional))
    //do not put  http into URL, just domain name
    $mycookies = GetCookies("www.yourdomain.com/login.login.asp",
    "password=12345&username=your_username&submit=LOGIN&set=Y","");
    //some extra params if you need them
    // echo "Cookies:<br><pre>\n".$mycookies."\n</pre>";
    //$body =PostPage("www.example.com/coolpage.asp",
    //"action=zzz",$mycookies);
    //echo "<br>Body:<br>\n".$body."\n";
    //im using get page - so it goes like this:
    $opts = array('http'=>array('method'=>"GET",
    'header'=>"Accept-language: en\r\nCookie: ".$mycookies."\r\n" ));
    $context = stream_context_create($opts);
    $fp = fopen('http://www.example.com/coolpage.asp?p1=1&p2=23', 'r', false, $context);
    fpassthru($fp);
    $html = fread($fp, 1000000);
    fclose($fp);
    echo     $html;

    function     PostPage($host,$query,$others=''){
           $path=explode('/',$host);
           $host=$path[0];
       unset(    $path[0]);
           $path='/'.(implode('/',$path));
    $post="POST $path HTTP/1.1\r\nHost: $host\r\n";
    $post.="Content-type: application/x-www-form-";
    $post.="urlencoded\r\n${others}";
    $post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
    $post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";
           $h=fsockopen($host,80);
           fwrite($h,$post);
       for(    $a=0,$r='';!$a;){
               $b=fread($h,8192);
               $r.=$b;
               $a=(($b=='')?1:0);
       }
           fclose($h);
       return     $r;
    }
    function     GetCookies($host,$query,$others=''){
           $path=explode('/',$host);
           $host=$path[0];
       unset(    $path[0]);
           $crlf = "\r\n";
           $path='/'.(implode('/',$path));
           $post="POST $path HTTP/1.1\r\nHost: $host\r\n";
    $post.="Content-type: application/x-www-form-urlencoded\r\n${others}";
    $post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
    $post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";
           $h=fsockopen($host,80);
           fwrite($h,$post);
           $r="";
       for(    $a=0;!$a;){
               $b=fread($h,512);
           echo     $b;
               $r.=$b;
               $gotSession=strpos($r,"ASPSESSION");
       if(    $gotSession)
          if(    strpos($r, $crlf . $crlf,$gotSession)>0) break;
               $a=(($b=='')?1:0);
       }
           fclose($h);
           $arr = split("Set-Cookie:",$r);
           $AllCookies="";$count=1;
       while (    $count < count($arr)) {
    $AllCookies.=substr($arr[$count].";",
    0,strpos($arr[$count].";",";")+1);

    $count++;}
       return     $AllCookies;

    }
    ?>

    It's not optimized , but i hope someone might find it usefull.
    Best Regards
    DRY_GIN
    sivann at cs dot ntua dot gr
    10 years ago
    This is an ident request example. If your client is running identd your real username will be known by the server.
    It is also usefull to identify people bypassing IP ACLs by using SOCKS proxy and dynamic IP forwarding. If the socks proxy server uses ident (most unices do) you will know his real username.
    For more information see RFC1413
    Timeout of 2 seconds in the example may not be enough.

    <?php
    error_reporting    (E_ALL);
    $remip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
    $remport = $HTTP_SERVER_VARS['REMOTE_PORT'];

    ob_implicit_flush();
    $fp = fsockopen($remip, 113, $errno, $errstr, 2);
    if (!    $fp) {
       echo     "$errstr ($errno)<br>\n";
       exit;
    }
    else {
           $out = "$remport, 80\r\n";
           fwrite($fp, $out);
           $answer=fgets($fp, 128);
    }
    fclose($fp);
    $ansparts=explode(":",$answer);
    $user=chop($ansparts[3]);
    echo     "You are $user@$remip:$remport";

    ?>
    Kiki_EF
    10 years ago
    Additional ICQ status request over proxy
    <?php
    function icq_uin($uin)
    {
        if (!     is_numeric($uin))
            return     false;
            $proxy_name = 'proxy.mydomain.de';
            $proxy_port = 8080;
            $proxy_user = "";
            $proxy_pass = "";
            $proxy_cont = '';
            $request_url = "http://status.icq.com/online.gif?icq=$uin";

            $proxy_fp = fsockopen($proxy_name, $proxy_port);
        if (!    $proxy_fp)
            return     false;
            fputs($proxy_fp, "GET $request_url HTTP/1.0\r\nHost: $proxy_name\r\n");
            fputs($proxy_fp, "Proxy-Authorization: Basic ". base64_encode ("$proxy_user:$proxy_pass")."\r\n\r\n");
        while(!    feof($proxy_fp)){
                $proxy_cont .= fread($proxy_fp,4096);
        }
            fclose($proxy_fp);
            $proxy_cont = substr($proxy_cont, strpos($proxy_cont,"\r\n\r\n")+4);
        if (    strstr($proxy_cont, 'online1'))
            return     'online';
        if (    strstr($proxy_cont, 'online0'))
            return     'offline';
        if (    strstr($proxy_cont, 'online2'))
            return     'disabled';
    }
    echo     "User is ".icq_uin(123456789012345);
    ?>

    Thanx

    [EDIT BY danbrown AT php DOT net: Based on code provided in a note by (rafaelbc AT matrix DOT com DOT br) on 23-MAY-09, which has since been removed.]
    dna at revold-design dot de
    10 years ago
    Something useful for ICQ:
    <?php
    $icquin     = "197829943";
    function     GetICQ($uin) {
        if (!    is_numeric($uin)) return FALSE;

            $fp = fsockopen('status.icq.com', 80, $errno, $errstr, 8);
        if (!    $fp) {
        return     "N/A";
            }
        else {

            $request = "HEAD /online.gif?icq=$uin HTTP/1.0\r\n"
                      ."Host: web.icq.com\r\n"
                      ."Connection: close\r\n\r\n";
            fputs($fp, $request);

        do {
                $response = fgets($fp, 1024);
        }
        while (!    feof($fp) && !stristr($response, 'Location'));

            fclose($fp);

        if (    strstr($response, 'online1')) return 'Online';
        if (    strstr($response, 'online0')) return 'Offline';
        if (    strstr($response, 'online2')) return 'N/A';
            // N/A means, this User set the Option, his Online
        // Status cannot be shown over the Internet
       
            return FALSE;
        }
    }

    echo     GetICQ($icquin);
    ?>
    ahauk at NO-SPAM dot synergynt dot net
    11 years ago
    The following script will login to a POP3 account using the username, password and server name provided via a standard form; determine the amount of messages using a binary search; then purge all messages.

    <?php
        $server     = $_POST["server"];
            $user = $_POST["user"];
            $pass = $_POST["pass"];
            $count = 1;
            $low = 0;
            $mid = 0;
            $high = 100000;
            $connection = fsockopen($server, 110, $errno, $errstr, 30);

        if(!    $connection) {
            print     "Connect Failed: $errstr ($errno)";
        } else {
                $output = fgets($connection, 128);
                fputs($connection, "user $user\n");
                $output = fgets($connection, 128);
                fputs($connection, "pass $pass\n");
                $output = fgets($connection, 128);
            while(    $low < $high - 1) {
                    $mid = floor(($low + $high) / 2);
                    fputs($connection, "list $mid\n");
                    $output = fgets($connection, 128);
                    $subout = substr($output, 0, 4);
                if(    $subout == "+OK ") {
                        $low = $mid;
                    continue;
                }
                elseif(    $subout == "-ERR") {
                            $high = $mid;
                        continue;
                } else {
                    break;
                    print     "An error has occurred. Please try again.";
                }
            }
                $limit = $mid - 1;
            while(    $count <= $limit) {
                    fputs($connection, "dele $count\n");
                    fgets($connection, 128);
                    $count = $count + 1;
            }
                fputs($connection, "quit\n");
        }
            fclose($connection);
        print     "Successfully removed $limit messages.";
    ?>
    lukas at MORESPAM dot jhu dot edu
    11 years ago
    Here's a function that I needed and couldn't use CURL... it helps you if you want to send the POST data (instead of GET) from one form to 2 or more other PHP scripts.  Trust me... it's a life saver!!

    <?php
              function HTTP_Post($URL,$data, $referrer="") {

                // parsing the given URL
                $URL_Info=parse_url($URL);

                // Building referrer
                if($referrer=="") // if not given use this script as referrer
                  $referrer=$_SERVER["SCRIPT_URI"];

                // making string from $data
                foreach($data as $key=>$value)
                  $values[]="$key=".urlencode($value);
                $data_string=implode("&",$values);

                // Find out which port is needed - if not given use standard (=80)
                if(!isset($URL_Info["port"]))
                  $URL_Info["port"]=80;

                // building POST-request:
                $request.="POST ".$URL_Info["path"]." HTTP/1.1\n";
                $request.="Host: ".$URL_Info["host"]."\n";
                $request.="Referer: $referer\n";
                $request.="Content-type: application/x-www-form-urlencoded\n";
                $request.="Content-length: ".strlen($data_string)."\n";
                $request.="Connection: close\n";
                $request.="\n";
                $request.=$data_string."\n";

                $fp = fsockopen($URL_Info["host"],$URL_Info["port"]);
                fputs($fp, $request);
            while(!    feof($fp)) {
                    $result .= fgets($fp, 128);
            }
                fclose($fp);

            return     $result;
          }

              $output1=HTTP_Post("http://www.example.com/script1.php",$_POST);
              $output2=HTTP_Post("http://www.example.net/script2.php",$_POST);
    ?>
    dante at dantecubed dot com
    11 years ago
    You may be able to speed this function up by using an IP address instead of a domain. PHP uses getHostByAddr internally in this function anyway, so you can save a step in the function process.
    konrad dot meyer at gmail dot com
    11 years ago
    The documentation example is of a GET request. I have found POST documentation to be lacking, and here's a function to easily simulate submitting form data:

    <?php
    # $host includes host and path and filename
        # ex: "myserver.com/this/is/path/to/file.php"
    # $query is the POST query data
        # ex: "a=thisstring&number=46&string=thatstring
    # $others is any extra headers you want to send
        # ex: "Accept-Encoding: compress, gzip\r\n"
    function post($host,$query,$others=''){
            $path=explode('/',$host);
            $host=$path[0];
        unset(    $path[0]);
            $path='/'.(implode('/',$path));
            $post="POST $path HTTP/1.1\r\nHost: $host\r\nContent-type: application/x-www-form-urlencoded\r\n${others}User-Agent: Mozilla 4.0\r\nContent-length: ".strlen($query)."\r\nConnection: close\r\n\r\n$query";
            $h=fsockopen($host,80);
            fwrite($h,$post);
        for(    $a=0,$r='';!$a;){
                $b=fread($h,8192);
                $r.=$b;
                $a=(($b=='')?1:0);
        }
            fclose($h);
        return     $r;
    }
    ?>
    alex at renesource dot lv
    12 years ago
    Set up SSL connection to server that requires client certificate:

    Convert client certificate from *.pfx (pkcs12) into*.pem with openssl (if needed):

    > openssl pkcs12 -in keys.pfx -out keys.pem

    PHP:

    <?php
    $context     = stream_context_create();
    $result = stream_context_set_option($context, 'ssl', 'local_cert', '/path/to/keys.pem');
    $result = stream_context_set_option($context, 'ssl', 'passphrase', 'pass_to_access_keys');

    $socket = fsockopen('ssl://'.$host, 443, $errno, $errstr, 30, $context);
    ?>
    jack at jtr dot de
    12 years ago
    Here is a function for testing a website/URI for availability:

    <?php
            /*
        * @return boolean
        * @param  string $link
        * @desc   �berpr�ft die angegeben URL auf Erreichbarkeit (HTTP-Code: 200)
        */
            function url_validate( $link )
        {       
                $url_parts = @parse_url( $link );

            if ( empty(     $url_parts["host"] ) ) return( false );

            if ( !empty(     $url_parts["path"] ) )
            {
                    $documentpath = $url_parts["path"];
            }
            else
            {
                    $documentpath = "/";
            }

            if ( !empty(     $url_parts["query"] ) )
            {
                    $documentpath .= "?" . $url_parts["query"];
            }

                $host = $url_parts["host"];
                $port = $url_parts["port"];
                // Now (HTTP-)GET $documentpath at $host";

                if (empty( $port ) ) $port = "80";
                $socket = @fsockopen( $host, $port, $errno, $errstr, 30 );
            if (!    $socket)
            {
                return(    false);
            }
            else
            {
                    fwrite ($socket, "HEAD ".$documentpath." HTTP/1.0\r\nHost: $host\r\n\r\n");
                    $http_response = fgets( $socket, 22 );
               
                if (     ereg("200 OK", $http_response, $regs ) )
                {
                    return(    true);
                        fclose( $socket );
                } else
                {
    //                echo "HTTP-Response: $http_response<br>";
                        return(false);
                }
            }
        }
    ?>
    rob at robhulme dot com
    12 years ago
    Just a note to everyone who is using fsockopen and fread / fgets for a HTTP connection.

    Unless you specify "Connection: Close" in your headers you will need to wait for the socket to time out before feof($streamPointer) to return true.

    This has wasted 2 days of my time, grr!

    -Rob
    terminal
    12 years ago
    Try this.
    Use AUTH when necessary.
    Read RFC 821 when having problems.

    <?php

        $handle     = smtp_connect($smtp_server, 25, 30, 1, 1, 1);
        echo     smtp_command($handle, "EHLO $domain\r\n", 1, 1);
        echo     smtp_command($handle, "MAIL FROM:<$from_mail>\r\n", 1, 1);
        echo     smtp_command($handle, "RCPT TO:<$to_mail>\r\n", 1, 1);
        echo     smtp_command($handle, "DATA\r\n", 1, 1);
        echo     smtp_command($handle, "$message\r\n.\r\n", 1, 1);
            // don't do it like this - it will hang up
        // echo smtp_command($handle, "$message", 1, 1);
        // echo smtp_command($handle, "\r\n.\r\n", 1, 1);
            echo smtp_command($handle, "QUIT\r\n", 1, 1);
            smtp_close($handle);
       
       
        function     smtp_connect($host, $port, $timeout=30, $echo_command=False, $echo_response=False, $nl2br=False)
        {
                $errno = 0;
                $errstr = 0;
            if(    $echo_command)
            {
                if(    $nl2br) { echo nl2br("CONNECTING TO $host\r\n"); }
                else { echo     "CONNECTING TO $host\r\n"; }
            }
                $handle = fsockopen($host, $port, $errno, $errstr, $timeout);
            if(!    $handle)
            {
                if(    $echo_command)
                {
                    if(    $nl2br) { echo nl2br("CONNECTION FAILED\r\n"); }
                    else { echo     "CONNECTION FAILED\r\n"; }
                }
                return     False;
            }
            if(    $echo_command)
            {
                if(    $nl2br) { echo nl2br("SUCCESS\r\n"); }
                else { echo     "SUCCESS\r\n"; }
            }
                $response = fgets($handle,1);
                $bytes_left = socket_get_status($handle);
            if (    $bytes_left > 0) { $response .= fread($handle, $bytes_left["unread_bytes"]); }
            if(    $echo_response)
            {
                if(    $nl2br) { echo nl2br($response); }
                else { echo     $response; }
            }
            return     $handle;
        }

        function     smtp_command($handle, $command, $echo_command=False, $nl2br=False)
        {
            if(    $echo_command)
            {
                if(    $nl2br) { echo nl2br($command); }
                else { echo     $command; }
            }
                fputs($handle, $command);
                $response = fgets($handle,1);
                $bytes_left = socket_get_status($handle);
            if (    $bytes_left > 0) { $response .= fread($handle, $bytes_left["unread_bytes"]); }
            if(    $nl2br) { return nl2br($response); }
            else { return     $response; }
        }
       
        function     smtp_close($handle)
        {
                fclose($handle);
        }
    ?>
    sergiopaternoster at tiscali dot it
    12 years ago
    If you want to connect via Telnet, it could be useful to set also the Terminal Type (some OS requires it)

    <?php
    $IAC      = chr(255);   /* interpret as command: */
    $SB = chr(250);     /* interpret as subnegotiation */
    $SE = chr(240);     /* end sub negotiation */
    $TELOPT_TTYPE = chr(24);     /* terminal type */
    $TELQUAL_IS = chr(0);    /* Option is... */

    //sending Terminal Type
    fwrite($sock,$IAC.$SB.$TELOPT_TTYPE.$TELQUAL_IS.'vt100'.$IAC.$SE);
    ?>

    ciao
    Sergio Paternoster
    blazely at removetoemail netspace net au
    12 years ago
    Here's a quick function to establish a connection to a web server that will time out if the connection is lost after a user definable amount of time or if the server can't be reached.

    Also supports Basic authentication if a username/password is specified. Any improvements or criticisms, please email me! :-)

    Returns either a resource ID, an error code or 0 if the server can't be reached at all. Returns -1 in the event that something really wierd happens like a non-standard http response or something. Hope it helps someone.

    Cheers,

    Ben Blazely

    <?php
    function connectToURL($addr, $port, $path, $user="", $pass="", $timeout="30")
    {
    $urlHandle = fsockopen($addr, $port, $errno, $errstr, $timeout);
    if (    $urlHandle)
    {
          socket_set_timeout($urlHandle, $timeout);
      if (    $path)
      {
           $urlString = "GET $path HTTP/1.0\r\nHost: $addr\r\nConnection: Keep-Alive\r\nUser-Agent: MyURLGrabber\r\n";
       if (    $user)
            $urlString .= "Authorization: Basic ".base64_encode("$user:$pass")."\r\n";
            $urlString .= "\r\n";

            fputs($urlHandle, $urlString);

            $response = fgets($urlHandle);

        if (    substr_count($response, "200 OK") > 0)      // Check the status of the link
            {
             $endHeader = false;                     // Strip initial header information
             while ( !$endHeader)
         {
          if (    fgets($urlHandle) == "\r\n")
               $endHeader = true;
         }

         return     $urlHandle;                      // All OK, return the file handle
            }
        else if (    strlen($response) < 15)                // Cope with wierd non standard responses
            {
             fclose($urlHandle);
         return -    1;
        }
        else                                                // Cope with a standard error response
            {
             fclose($urlHandle);
         return     substr($response,9,3);
        }
       }

       return     $urlHandle;
      }
      else
      {
       return     0;
      }
    }
    }
    ?>
    Sherif Gayed
    13 years ago
    Here is how to connect to the web from behind a proxy server:

    <?php
    /*************start code**************/
    /*your proxy server address*/
    $proxy = "192.168.10.1";
    /*your proxy server port*/
    $port = 8080;
    /*the url you want to connect to*/
    $url = "http://www.php.net/";
    $fp = fsockopen($proxy, $port);
    fputs($fp, "GET $url HTTP/1.0\r\nHost: $proxy\r\n\r\n");
    while(!    feof($fp)){
          $line = fgets($fp, 4000);
      print(    $line);
    }
    fclose($fp);
    /**************end code**************/
    ?>
    g dot bashi at ntlworld dot com
    13 years ago
    The timeout parameter was not supported under windows until PHP 4.3.0, previously it was fixed at 30sec.
    dan at lovepond dot com
    13 years ago
    Here is some code to help out abit more with the EOF problem.
    I had a problem where I needed to strip out so many lines of server input to get back right data i wanted.

    <?php
    $port    =4000;
    $host="localhost";
    $message="test";
    $status=senddata($host,$port,$message);
    print     "$status";

    function     senddata($host,$port,$message) {

    #takes in account servers that do not return EOF character
    #send data to server and get back input

    #function globals
    $linenumber="2"; #amount of lines to get rid of before we give input
    $lineamount="1"; #amount of lines to read after we give input

    $fp = fsockopen("$host", $port, $errno, $errstr, 30);
    if (!    $fp) {
       echo     "$errstr ($errno)";
    }
    else {
       for (    $i = 1; $i < $linenumber+1; $i++) {
              fread ($fp,1);
              $bytes_left = socket_get_status($fp);
          if (    $bytes_left > 0) { fread($fp, $bytes_left[unread_bytes]); }
       }
           fputs($fp, "$message\r\n");
       for (    $i = 1; $i < $lineamount+1; $i++) {
              $status.=fread($fp,1);
              $bytes_left = socket_get_status($fp);
          if (    $bytes_left > 0) { $status.=fread($fp, $bytes_left[unread_bytes]); }
       }
           fclose ($fp);
    }

    return     $status;
    }

    ?>
    php at hatzidakis dot org
    5 months ago
    Although undocumented, it seems that $hostname can be a "<hostname>:<port>" string:

    <?php
    if (fsockopen("www.google.com:80", 80)) {
        echo     "Success!";
    }
    else {
        echo     "Fail";
    }
    ?>
    biguenique at yahoo dot ca
    2 years ago
    Did you know that fsockopen() DOES NOT validate SSL certificates whatsoever? For the sake of World's overall security level, I guess it would be a very positive idea to add a BIG WARNING notice on the manual page!

    Citing the extensive study  titled "The Most Dangerous Code in the World: Validating SSL Certificates in Non-Browser Software" published in 2012 (google it if they removed the link) on page 5:

    "PHP provides several methods for establishing SSL connections. For example, fsockopen, which opens a raw socket to the remote server, can be used to connect to SSL servers by putting “ssl://” in the URL. Even though fsockopen does not perform any certificate checks whatsoever, PHP application developers routinely use it for SSL connection establishment (see Section 9)."

    For proper certificate validation with some level of ease, you can always move to cURL, but be careful:

    "PHP also provides a cURL binding, which uses cURL’s default settings to establish SSL connections with proper certificate validation. As we show in Sections 7.1, 7.2, and 7.3, application developers often set cURL options incorrectly, overriding the defaults and breaking certificate validation."

    For more detailed insights, try out the following code:
    <?php readfile("http".str_replace('+', '.', implode('/', array(":", null, "www+cs+utexas+edu", "~shmat", "shmat_ccs12.pdf")))); ?>
    steve at visual77 dot com
    6 years ago
    A short, quick unchunk function that makes use of regular expressions:

    <?php

    function unchunk($result) {
        return     preg_replace_callback(
                '/(?:(?:\r\n|\n)|^)([0-9A-F]+)(?:\r\n|\n){1,2}(.*?)'.
                '((?:\r\n|\n)(?:[0-9A-F]+(?:\r\n|\n))|$)/si',
                create_function(
                    '$matches',
                    'return hexdec($matches[1]) == strlen($matches[2]) ? $matches[2] : $matches[0];'
                ),
                $result
            );
    }

    ?>
    dot dot dot dot dot alexander at gmail dot com
    8 years ago
    An edit to my below function for extra headers support and a bit of debugging
    ( array("key" => "value")  type)
    <?php

    if(!function_exists("download")){
        function     download($uri, $port = 80, $extra_headers = NULL){
    if(!    function_exists("stripos")){
        function     stripos($str, $needle, $offset=0){
            return     strpos(strtolower($str),strtolower($needle),$offset);
        }    /* endfunction stripos */
    }/* endfunction exists stripos*/
                if(!is_int($port))$port = 80;
            if(!    is_array($extra_headers))$extra_headers = array();
                $uri = strtr( strval($uri), array("http://" => "", "https://" => "ssl://", "ssl://" => "ssl://", "\\" => "/", "//" => "/") );
           
            if(  (     $protocol = stripos($uri, "://") ) !== FALSE  ){
                if(  (     $domain_pos = stripos($uri, "/", ($protocol + 3)) ) !== FALSE  ){
                        $domain = substr($uri, 0, $domain_pos);
                        $file = substr($uri, $domain_pos);
                }
                else{
                        $domain = $uri;
                        $file = "/";
                }
            }
            else{
                if(  (     $domain_pos = stripos($uri, "/") ) !== FALSE  ){
                        $domain = substr($uri, 0, $domain_pos);
                        $file = substr($uri, $domain_pos);
                }
                else{
                        $domain = $uri;
                        $file = "/";
                }
            }
           
                $fp = fsockopen($domain, $port, $errno, $errstr, 30);
            if(!    $fp){
                return     FALSE;
            }
            else{
                    $out = "GET " . $file . " HTTP/1.1\r\n";
                    $out .= "Host: " . $domain . "\r\n";
                foreach(     $extra_headers as $nm => $vl ){
            $out .= strtr( strval($nm), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . ": " . strtr( strval($vl), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . "\r\n";
                }
                    $out .= "Connection: Close\r\n\r\n";
               
                    $response = "";
                    fwrite($fp, $out);
                while (!    feof($fp)) {
                        $response .= fgets($fp, 128);
                }
                    fclose($fp);
               
                global     $http_response_header;
                    $http_response_header = array();
                if(      stripos($response, "\r\n\r\n") !== FALSE  ){
                        $hc = explode("\r\n\r\n",  $response);
                        $headers = explode("\r\n",  $hc[0]);
                   
                    if(!    is_array($headers))$headers = array();
                    foreach(    $headers as $key => $header){
                            $a = "";
                            $b = "";
                        if(      stripos($header, ":") !== FALSE  ){
                            list(    $a, $b) = explode(":", $header);
                                $http_response_header[trim($a)] = trim($b);
                        }
                    }
                    return     end($hc);
                }
                else if(      stripos($response, "\r\n") !== FALSE  ){
                        $headers = explode("\r\n",  $response);
                   
                    if(!    is_array($headers))$headers = array();
                    foreach(    $headers as $key => $header){
                        if(      $key < ( count($headers) - 1 )  ){
                                $a = "";
                                $b = "";
                            if(      stripos($header, ":") !== FALSE  ){
                                list(    $a, $b) = explode(":", $header);
                                    $http_response_header[trim($a)] = trim($b);
                            }
                        }
                    }
                    return     end($headers);
                }
                else{
                    return     $response;
                }
            }
        }    /*endfunction download*/
    }/*endif no function download*/
    ?>
    SoupNazi
    5 years ago
    I would like to save people some time.  I spent a couple hours trying to de-hunkify the response from apache2.  I found out that if you simply make a 1.0 request vs. a 1.1 request you will get no hunks and so this simple script below will get the page you want in plain text, no hunks:

    <?php
    $data    =false;
    $url='www.example.com';

    $fp = @fsockopen($url, 80, $errno, $errstr, 1);
    if (    $fp) {
            stream_set_timeout($fp,1);         
            $out = "GET / HTTP/1.0\r\n";
            $out .= "Host: www.example.com\r\n";
            $out .= "Connection: Close\r\n\r\n";
        if (    fwrite($fp, $out)) {
                $content='';
                $header = "not yet";
            while (!    feof($fp)) {
                    $data=true;
                    $line=fgets($fp,128);
                if (    $line=="\r\n" && $header=="not yet") {
                        $header = "passed";
                }
                if (    $header=="passed") {
                        $content.=$line;
                }
            }
                fclose ($fp);
        }
    }
    if (!    $data) {
        print     "Unable to retrieve all or part of $url";
    } else {
        print     "$content";
    }

    ?>

    I borrowed some of the script from another poster here - the portion removing the returned header.
    FaTe
    6 years ago
    In all header aspects I can understand for 3rd party content you may not be able to apply the following but for those reading pages where content being read by fsockopen is editable then I suggest adding a simple unique tag to the beginning of any page being read such as ":THISTAG:"

    Cleaning the header contents becomes simplier when you can then use a method like split to grab your data like:

    list($header,$data) = explode(":THISTAG:",$data);
    Hyan Christian
    7 years ago
    To just take the HTTP content from fsockopen, better wait until feof finish to read the \r\n separator

    <?php
    //fsockopen, fputs..

    $content = "";
    $header = "not yet";

    while( !    feof( $pointer ) ) {
            $line = fgets( $pointer, 128 );
        if(     $line == "\r\n" && $header == "not yet" ) {
                $header = "passed";
        }
        if(     $header == "passed" ) {
                $content .= $line;
        }
    }

    //fclose..

    echo( substr( $content, 2 ) );
    ?>
    iain at monitormedia dot co dot uk
    13 years ago
    Here's how to send an email using SMTP. This includes rudimentary checking on server responses during the process of sending an email. Could be improved by more comprehensive processing of the result codes...or going on to the next mail exchanger when you fail after connecting to the first.

    <?php

    function another_mail($to,$subject,$headers,$message)
    {
    // Could get this from the php ini?
    $from="me@example.com";
    list(    $me,$mydomain) = split("@",$from);

    // Now look up the mail exchangers for the recipient
    list($user,$domain) = split("@",$to,2);
    if(    getmxrr($domain,$mx,$weight) == 0)  return FALSE;

    // Try them in order of lowest weight first
    array_multisort($mx,$weight);
    $success=0;

    foreach(    $mx as $host) {
          // Open an SMTP connection
          $connection = fsockopen ($host, 25, $errno, $errstr, 1);
      if (!    $connection)
        continue;
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "220") break;

          // Introduce ourselves
          fputs($connection, "HELO $mydomain\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "250") break;

          // Envelope from
          fputs($connection, "MAIL FROM: $from\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "250") break;

          // Envelope to
          fputs($connection, "RCPT TO: $to\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "250") break;

          // The message
          fputs($connection, "DATA\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "354") break;

          // Send To:, From:, Subject:, other headers, blank line, message, and finish
      // with a period on its own line.
          fputs($connection, "To: $to\nFrom: $from\nSubject: $subject\n$headers\n\n$message\n.\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "250") break;

          // Say bye bye
          fputs($connection,"QUIT\n");
          $res=fgets($connection,256);
      if(    substr($res,0,3) != "221") break;

          // It worked! So break out of the loop which tries all the mail exchangers.
          $success=1;
      break;
    }
    // Debug for if we fall over - uncomment as desired
    // print $success?"Mail sent":"Failure: $res\n";
    if($connection) {
      if(    $success==0) fputs($connection, "QUIT\n");
          fclose ($connection);
    }
    return     $success?TRUE:FALSE;
    }

    another_mail("recipient@example.com","My Subject","X-mailer: PHP Script\nX-another-header: Whatever","Test email body.\n\nNote if you actually put a period on a line\nby itself, the function will terminate prematurely.\n\nYou will get a partial email sent though.\n");
    ?>
    andypsv at rcdrugs dot com
    6 years ago
    look at this smart ssl/http fsockopen function as a good solution for dealing with things

    <?php
    function _get($type,$host,$port='80',$path='/',$data='') {
            $_err = 'lib sockets::'.__FUNCTION__.'(): ';
        switch(    $type) { case 'http': $type = ''; case 'ssl': continue; default: die($_err.'bad $type'); } if(!ctype_digit($port)) die($_err.'bad port');
        if(!empty(    $data)) foreach($data AS $k => $v) $str .= urlencode($k).'='.urlencode($v).'&'; $str = substr($str,0,-1);
       
            $fp = fsockopen($host,$port,$errno,$errstr,$timeout=30);
        if(!    $fp) die($_err.$errstr.$errno); else {
                fputs($fp, "POST $path HTTP/1.1\r\n");
                fputs($fp, "Host: $host\r\n");
                fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
                fputs($fp, "Content-length: ".strlen($str)."\r\n");
                fputs($fp, "Connection: close\r\n\r\n");
                fputs($fp, $str."\r\n\r\n");
           
            while(!    feof($fp)) $d .= fgets($fp,4096);
                fclose($fp);
        } return     $d;
    }
    ?>
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