cache.php
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cache.php
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	<?php

	/*
	* Zed
	* (c) 2010, Dereckson, some rights reserved
	* Released under BSD license
	*
	* Cache calling class.
	*
	* 0.1 2010-07-06 22:45 Initial version [DcK]
	*
	*/

	class Cache {
	/*
	* Gets the cache instance, initializing it if needed
	* @eturn Cache the cache instance, or null if nothing is cached
	*/
	static function load () {
	global $Config;
	if (
	!array_key_exists('cache', $Config) \|\|
	!array_key_exists('engine', $Config['cache'])
	) {
	//cache is not configured or engine is not specified
	return null;
	}

	$engine = $Config['cache']['engine'];
	$engine_file = 'includes/cache/' . $engine . '.php';
	$engine_class = 'Cache' . ucfirst($engine);

	if (!file_exists($engine_file)) {
	message_die(GENERAL_ERROR, "Can't initialize $engine cache engine.<br />$engine_file not found.", 'Cache');
	}

	require_once($engine_file);
	if (!class_exists($engine_class)) {
	message_die(GENERAL_ERROR, "Can't initialize $engine cache engine.<br />$engine_class class not found.", 'Cache');
	}

	return call_user_func(array($engine_class, 'load'));
	}
	}

	?>