Note: This manual is provided for your convenience only - this is not the official source and may not be 100% up to date.
LXXXVI. Memcache Functions
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.
More information about memcached can be found at http://www.danga.com/memcached/.
This module uses functions of zlib to support on-the-fly data compression. Zlib is required to install this module.
PHP 4.3.3 or newer is required to use the memcache extension.
This PECL extension is not bundled with PHP. Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: http://pecl.php.net/package/memcache.
In order to use these functions you must compile PHP with Memcache support
by using the
Windows users will enable php_memcache.dll inside of php.ini in order to use these functions. The DLL for this PECL extension may be downloaded from either the PHP Downloads page or from http://pecl4win.php.net/
The behaviour of these functions is affected by settings in php.ini.
For further details and definitions of the PHP_INI_* constants, see the Appendix H.
Table 1. Memcache Configuration Options
Here's a short explanation of the configuration directives.
There is only one resource type used in memcache module - it's the link identifier for a cache server connection.
Table 2. MemCache Constants
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.