PHP 7.0.6 Released

    iconv Functions

    See Also

    See also GNU Recode functions.

    Table of Contents

    User Contributed Notes

    nod at mobi dot kz
    9 years ago
    If you need convert string from Windows-1251 to 866. Some characters of 1251 haven't representation on DOS 866. For example, long dash -- chr(150) will be converted to 0, after that iconv finish his work and other charactes  will be skiped. Problem characters range in win1251 (128-159,163,165-167,169,171-174,177-182,187-190).

    Use this:

    //$text  -  input text in windows-1251
    //$cout  -  output text in 866 (cp866, dos ru ascii)

    for($i=0;$i<strlen($text);$i++) {
        $ord=ord($text[$i]);
        if($ord>=192&&$ord<=239) $cout.=chr($ord-64);
        elseif($ord>=240&&$ord<=255) $cout.=chr($ord-16);
        elseif($ord==168) $cout.=chr(240);
        elseif($ord==184) $cout.=chr(241);
        elseif($ord==185) $cout.=chr(252);
        elseif($ord==150||$ord==151) $cout.=chr(45);
        elseif($ord==147||$ord==148||$ord==171||$ord==187) $cout.=chr(34);
        elseif($ord>=128&&$ord<=190) $i=$i; //нет представления данному символу
        else $cout.=chr($ord);
    }
    thierry.bo
    12 years ago
    Windows users.

    Personaly I leaved all php dlls in \php\dlls\ directory, just adding this path to my system path, and iconv.dll supplied with php 4.3.2 works fine, also leaving supplied php_iconv.dll in my \php\extensions\ directory. This was working fine with Apache and Omnihttpd server I use.

    As soon I installed IIS on the same server, php complained about not finding php_iconv.dll in the extensions directory. In fact PHP with IIS loads all extensions in my \php\extensions directory correctly, except php_iconv.dll.
    Although iconv.dll is in my system path, the only way to load php_iconv.dll was to copy iconv.dll file in \%winnt\system32 directory. With other servers, iconv.dll can be in anywhere in the system path.
    Martin Petrov
    6 years ago
    This is edited functions utf8_to_cp1251 and cp1251_to_utf8.
    Changes: Check current string encoding.

    <?php
    function cp1251_to_utf8($s)
      {
      if ((    mb_detect_encoding($s,'UTF-8,CP1251')) == "WINDOWS-1251")
        {
            $c209 = chr(209); $c208 = chr(208); $c129 = chr(129);
        for(    $i=0; $i<strlen($s); $i++)
          {
              $c=ord($s[$i]);
          if (    $c>=192 and $c<=239) $t.=$c208.chr($c-48);
          elseif (    $c>239) $t.=$c209.chr($c-112);
          elseif (    $c==184) $t.=$c209.$c209;
          elseif (    $c==168)    $t.=$c208.$c129;
          else     $t.=$s[$i];
          }
        return     $t;
        }
      else
        {
        return     $s;
        }
       }

    function     utf8_to_cp1251($s)
      {
      if ((    mb_detect_encoding($s,'UTF-8,CP1251')) == "UTF-8")
        {
        for (    $c=0;$c<strlen($s);$c++)
          {
              $i=ord($s[$c]);
          if (    $i<=127) $out.=$s[$c];
          if (    $byte2)
            {
                $new_c2=($c1&3)*64+($i&63);
                $new_c1=($c1>>2)&5;
                $new_i=$new_c1*256+$new_c2;
            if (    $new_i==1025)
              {
                  $out_i=168;
              } else {
              if (    $new_i==1105)
                {
                    $out_i=184;
                } else {
                    $out_i=$new_i-848;
                }
              }
                $out.=chr($out_i);
                $byte2=false;
            }
            if ((    $i>>5)==6)
              {
                  $c1=$i;
                  $byte2=true;
              }
          }
        return     $out;
        }
      else
        {
        return     $s;
        }
      }
    ?>
    andrej009
    10 years ago
    There's one more special german character: ß (sometimes displayed as Ϋ)

    so: case 159: $out .= "ß";break;
    Erel Segal - Rent a Brain
    9 years ago
    Note that my mysql_iconv will not translate correctly the Hebrew dotting symbols (Niqqud) - they will be converted into question marks.

    Here is a straightforward (and not very efficient) solution:

    <?php
    function utf8_to_windows1255($utf8) {
            $windows1255 = "";
            $chars = preg_split("//",$utf8);
        for (    $i=1; $i<count($chars)-1; $i++) {
                $prefix = ord($chars[$i]);
                $suffix = ord($chars[$i+1]);
                //print ("<p>$prefix $suffix");
                if ($prefix==215) {
                    $windows1255 .= chr($suffix+80);
                    $i++;
            }
            elseif (    $prefix==214) {
                    $windows1255 .= chr($suffix+16);
                    $i++;
            }
            else {
                    $windows1255 .= $chars[$i];
            }
        }
        return     $windows1255;
    }
    ?>
    Anonymous
    13 years ago
    I'm not sure how recent version of
    glibc 2.x Slackware 7.x/8.x comes with, but
    it's very likely that it comes with glibc 2.2.x.
    In that case, you don't have to bother at all to
    install libiconv in /usr/local. iconv(3) in glibc 2.2.x
    is very good (thanks to Ulrich Drepper and
    Bruno Haible. the latter is the author of libiconv).
    libiconv is very handy for those outdated/non-standard-compliant Unix
    and non-Unix systems that don't have
    sufficiently good iconv(3) in their C library.
    elk at NOSPAMmodel-fx dot com
    13 years ago
    To compile libiconv under Slackware 7.0 or 8.0 without errors (either with the apache module of PHP or the CGI version), you must specify the full path of the libiconv installation.

    Exemple :

           --with-iconv=/usr/local
    Christophe Lienert
    10 years ago
    In addition to Godfather's note below, you may find this function useful just as well.

    // function to change german umlauts into ue, oe, etc.
    function cv_input($str){
          $out = "";
          for ($i = 0; $i<strlen($str);$i++){
               $ch= ord($str{$i});
               switch($ch){
                    case 195: $out .= "";break;    
                    case 164: $out .= "ae"; break;
                    case 188: $out .= "ue"; break;
                    case 182: $out .= "oe"; break;
                    case 132: $out .= "Ae"; break;
                    case 156: $out .= "Ue"; break;
                    case 150: $out .= "Oe"; break;
                    default : $out .= chr($ch) ;
               }
          }
          return $out;
    }
    tokiee at hotmail dot com
    11 years ago
    iconv now has been built-in, at least in PHP >= 5.0.1 for win32. You don't have to modify php.ini for this. Actually you should not. And clearly, libiconv does not need to be installed.
    The Godfather
    11 years ago
    With this function you can translate the german Symbols from the character set UTF-8 in windows-1252.

    function convert_text($str){
      $out = '';
      for ($i = 0; $i<strlen($str);$i++){
       $ch = ord($str{$i});
       switch($ch){
             case 252: $out .= chr(129);break; //u Umlaut
             case 220: $out .= chr(154);break;//U Umlaut
             case 228: $out .= chr(132);break;//a Umlaut 
             case 196: $out .= chr(142);break;//A Umlaut
             case 214: $out .= chr(153);break;//O Umlaut 
             case 246: $out .= chr(148);break;//o Umlaug
             case 223: $out .= chr(225);break;//SZ
             default : $out .= chr($ch) ;
       }
      }
      return $out;
    }
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