Last updated: Fri, 28 Nov 2008

Examples

All the functions that serialize variables use the first element of an array to determine whether the array is to be serialized into an array or structure. If the first element has string key, then it is serialized into a structure, otherwise, into an array.

Example #1 Serializing a single value with WDDX


<?php
echo wddx_serialize_value("PHP to WDDX packet example", "PHP packet");
?>

This example will produce:

<wddxPacket version='1.0'><header comment='PHP packet'/><data>
<string>PHP to WDDX packet example</string></data></wddxPacket>

Example #2 Using incremental packets with WDDX


<?php
$pi = 3.1415926;
$packet_id = wddx_packet_start("PHP");
wddx_add_vars($packet_id, "pi");

/* Suppose $cities came from database */
$cities = array("Austin", "Novato", "Seattle");
wddx_add_vars($packet_id, "cities");

$packet = wddx_packet_end($packet_id);
echo $packet;
?>

This example will produce:

<wddxPacket version='1.0'><header comment='PHP'/><data><struct>
<var name='pi'><number>3.1415926</number></var><var name='cities'>
<array length='3'><string>Austin</string><string>Novato</string>
<string>Seattle</string></array></var></struct></data></wddxPacket>

Note: If you want to serialize non-ASCII characters you have to convert your data to UTF-8 first (see utf8_encode() and iconv()).

add a note User Contributed Notes
Examples

dormilich at netscape dot net
27-Nov-2008 06:37


If you want to use the WDDX 1.0 DTD for validation (http://www.openwddx.org/downloads/dtd/wddx_dtd_10.txt) check that you define the comment as element, not as attribute.



<?xml version="1.0" encoding="iso-8859-1" ?>

<wddxPacket version='1.0'>

    <header>

        <comment>PHP</comment>

    </header>

    <data><!-- WDDX serialized data --></data>

</wddxPacket>

add a note

WDDX Functions

Predefined Constants

Last updated: Fri, 28 Nov 2008