WDDX Functions
Introduzione
These functions are intended for work with » WDDX.
Requisiti
In order to use WDDX, you will need to install the expat library (which comes with Apache 1.3.7 or higher).
Installazione
After installing expat compile PHP with --enable-wddx.
La versione per Windows di PHP ha già compilato il supporto per questo modulo. Non occorre caricare alcun modulo addizionale per potere utilizzare queste funzioni.
Configurazione di Runtime
Questa estensione non definisce alcuna direttiva di configurazione in php.ini
Tipi di risorse
This extension defines a WDDX packet identifier returned by wddx_packet_start().
Costanti predefinite
Questa estensione non definisce alcuna costante.
Esempi
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>
Nota: If you want to serialize non-ASCII characters you have to convert your data to UTF-8 first (see utf8_encode() and iconv()).
Indice dei contenuti
- wddx_add_vars — Add variables to a WDDX packet with the specified ID
- wddx_deserialize — Alias di wddx_unserialize
- 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
- wddx_unserialize — Unserializes a WDDX packet