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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<!-- Purpose: remote.other -->
<!-- Membership: pecl, external -->
<reference id="ref.memcache">
<title>Memcache Functions</title>
<titleabbrev>Memcache</titleabbrev>
<partintro>
<section id="memcache.intro">
&reftitle.intro;
<para>
Memcache module provides handy procedural and object oriented interface
to memcached, highly effective caching daemon, which was especially
designed to decrease database load in dynamic web applications.
</para>
<para>
More information about memcached can be found at <ulink
url="&url.memcache;">&url.memcache;</ulink>.
</para>
</section>
<section id="memcache.requirements">
&reftitle.required;
<para>
This module uses functions of <ulink url="&url.zlib;">zlib</ulink>
to support on-the-fly data compression. Zlib is required to install
this module.
</para>
<para>
PHP 4.3.3 or newer is required to use the memcache extension.
</para>
</section>
&reference.memcache.configure;
&reference.memcache.ini;
<section id="memcache.resources">
&reftitle.resources;
<para>
There is only one resource type used in memcache module - it's
the link identifier for a cache server connection.
</para>
</section>
&reference.memcache.constants;
<section id="memcache.examples">
&reftitle.examples;
<para>
<example>
<title>memcache extension overview example</title>
<programlisting role="php">
<![CDATA[
<?php
$memcache = new Memcache;
$memcache->connect('localhost', 11211) or die ("Could not connect");
$version = $memcache->getVersion();
echo "Server's version: ".$version."<br/>\n";
$tmp_object = new stdClass;
$tmp_object->str_attr = 'test';
$tmp_object->int_attr = 123;
$memcache->set('key', $tmp_object, false, 10) or die ("Failed to save data at the server");
echo "Store data in the cache (data will expire in 10 seconds)<br/>\n";
$get_result = $memcache->get('key');
echo "Data from the cache:<br/>\n";
var_dump($get_result);
?>
]]>
</programlisting>
</example>
</para>
<para>
In the above example, an object is being saved in the cache and then
retrieved back. Object and other non-scalar types are serialized before
saving, so it's impossible to store resources (i.e. connection identifiers
and others) in the cache.
</para>
</section>
</partintro>
&reference.memcache.functions;
</reference>
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