CXV. WDDX Functions

Introdução

These functions are intended for work with WDDX.

Requisitos

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

Instalação

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

A versão para Windows do PHP tem suporte embutido para esta extensão. Você não precisa carregar nenhuma extensão adicional para utilizar essas funções.

Configuração durante execução

Esta extensão não define nenhum parâmetro de configuração no php.ini.

Tipos Resource

Esta extensão não possui nenhum tipo resource.

Constantes Predefinidas

Esta extensão não possui nenhuma constante.

Exemplos

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.

Exemplo 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>

Exemplo 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>

Nota: If you want to serialize non-ASCII characters you have to set the appropriate locale before doing so (see setlocale()).

Índice
wddx_add_vars --  Add variables to a WDDX packet with the specified ID
wddx_deserialize -- Deserializes a WDDX packet
wddx_packet_end -- Ends a WDDX packet with the specified ID
wddx_packet_start --  Starts a new WDDX packet with structure inside it
wddx_serialize_value -- Serialize a single value into a WDDX packet
wddx_serialize_vars -- Serialize variables into a WDDX packet