CXXXII. WDDX Functions

Úvod

These functions are intended for work with WDDX.

Požiadavky

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

Inštalácia

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

Windows verzie PHP maj� vstavan� podporu pre toto roz��renie. Nemus�te na��ta� �iadne dodato�n� roz��renie, aby ste mohli tieto funkcie pou��va�.

Runtime Konfigurácia

Toto roz��renie nem� �iadne konfigura�n� direkt�vy definovan� v php.ini.

Typy zdrojov

Toto roz��renie nem� definovan� �iadne typy zdrojov.

Preddefinované Konštanty

Toto roz��renie nem� definovan� �iadne kon�tanty.

Príklady

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.

Príklad 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>

Príklad 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>

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

Obsah
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