<?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>