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WDDX Functions

Introductie

These functions are intended for work with » WDDX.

Afhankelijkheden

In order to use WDDX, you will need to install the expat library (which comes with Apache 1.3.7 or higher).

Installatie

After installing expat compile PHP with --enable-wddx.

Deze functies worden automatisch ingebouwd in de windows versie van PHP. Er zijn geen extra handelingen nodig om deze functies te gebruiken.

Configuratie tijdens scriptuitvoer

Deze extensie gebruikt geen configuratie regels.

Resource types

This extension defines a WDDX packet identifier returned by wddx_packet_start().

Voorgedefinieerde constanten

Deze extensie definieert geen constanten.

Voorbeelden

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()).

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