wddx_serialize_vars

(PHP 4, PHP 5, PHP 7)

wddx_serialize_vars — Serialize variables into a WDDX packet

Description

string wddx_serialize_vars ( mixed $var_name [, mixed $... ] )

Creates a WDDX packet with a structure that contains the serialized representation of the passed variables.

Parameters

This function takes a variable number of parameters.

var_name: Can be either a string naming a variable or an array containing strings naming the variables or another array, etc.
...

Return Values

Returns the WDDX packet, or FALSE on error.

Examples

Example #1 wddx_serialize_vars() example


<?php
$a = 1;
$b = 5.5;
$c = array("blue", "orange", "violet");
$d = "colors";

$clvars = array("c", "d");
echo wddx_serialize_vars("a", "b", $clvars);
?>

The above example will output:

<wddxPacket version='1.0'><header/><data><struct><var name='a'><number>1</number></var>
<var name='b'><number>5.5</number></var><var name='c'><array length='3'>
<string>blue</string><string>orange</string><string>violet</string></array></var>
<var name='d'><string>colors</string></var></struct></data></wddxPacket>

User Contributed Notes

kangus at jaga dot us

12 years ago


A function to use for dates with PHP & WDDX
getdate() 
 
$ta="<FORM><TEXTAREA rows=15 cols=80>" ;
$te="</TEXTAREA></FORM>";
$packet_id=wddx_packet_start("Date Example--");
$myDate=getdate();
wddx_add_vars($packet_id,'myDate');
$package=wddx_packet_end($packet_id);
print($ta.$package.$te);

Produces:

<wddxPacket version='1.0'><header><comment>Date Example--</comment></header>
<data><struct><var name='myDate'>
<struct><var name='seconds'><number>12</number></var>
<var name='minutes'><number>55</number></var>
<var name='hours'><number>1</number></var>
<var name='mday'><number>13</number></var>
<var name='wday'><number>1</number></var>
<var name='mon'><number>10</number></var>
<var name='year'><number>2003</number></var>
<var name='yday'><number>285</number></var>
<var name='weekday'><string>Monday</string></var>
<var name='month'><string>October</string></var>
<var name='0'><number>1066031712</number>
</var></struct></var></struct></data></wddxPacket>

tychay at alumni dot caltech dot edu

14 years ago


The above feature will cause a slight trouble since the name of the variable will always be "wddxtemp" but you can use preg_replace to fix that.

Also, a better approach is to serialize the entire class. WDDX will that write a reserved "php_class_name" variable which can be used to reconstruct the class during a deserialize.

tychay at alumni dot caltech dot edu

14 years ago


You can use globals to get around the above in classes:

<?php
class Test
{
  var $str;
  var $wddx;

  function Test()
  {
    $this->str = "test";
    $this->wddx_serialize($this->str);
    header('Content-Type: text/xml');
    echo ($this->wddx);
  }
  
  function wddx_serialize($var) {
    global $wddxtemp;
    unset($wddxtemp);
    $wddxtemp = $var;
    $this->wddx = wddx_serialize_vars("wddxtemp");
  }
}

new Test();
?>
-terry

tychay at alumni dot caltech dot edu

14 years ago


You can use globals to get around the above in classes:

<?php
class Test
{
  var $str;
  var $wddx;

  function Test()
  {
    $this->str = "test";
    $this->wddx_serialize($this->str);
    header('Content-Type: text/xml');
    echo ($this->wddx);
  }
  
  function wddx_serialize($var) {
    global $wddxtemp;
    unset($wddxtemp);
    $wddxtemp = $var;
    $this->wddx = wddx_serialize_vars("wddxtemp");
  }
}

new Test();
?>
-terry

christian dot knoflach at gmx dot at

14 years ago


Be careful using WDDX - functions on object variables. As I just had to find out the following won't work:



<?php

class Test

{

  var $str;

  var $wddx;



  function Test()

  {

    $this->str = "test";

    $this->wddx = wddx_serialize_vars("this->str");

    print(htmlentities($this->wddx));

  }

}



new Test();

?>



That's what you'll get:

<wddxPacket version='1.0'><header/><data><struct></struct></data></wddxPacket>