Enano CMS (1.1.x): includes/cache.php@c522ea3871a3 (annotated)

607 935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	1	<?php
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	2
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	3	/*
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	4	* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
1081 745200a9cc2a Fixed some upgrade bugs; added support for choosing one's own date/time formats; rebrand as 1.1.7 Dan parents: 801 diff changeset	5	* Copyright (C) 2006-2009 Dan Fuhry
607 935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	6	*
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	7	* This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	8	* as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	9	*
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	10	* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	11	* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	12	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	13
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	14	/**
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	15	* Framework for caching arbitrary data around the site.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	16	* @package Enano
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	17	* @subpackage Core
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	18	* @author Dan Fuhry <dan@enanocms.org>
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	19	* @license GNU General Public License
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	20	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	21
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	22	class CacheManager
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	23	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	24	/**
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	25	* Fetch a cached piece of data.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	26	* @param string Cache ID. The timestamp is checked automatically.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	27	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	28
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	29	public function fetch($cache_id)
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	30	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	31	if ( !preg_match('/^[a-z0-9_]+$/', $cache_id) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	32	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	33	throw new Exception('Cache ID must be letters, numbers, and underscores.');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	34	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	35	$cache_file = ENANO_ROOT . "/cache/cache_$cache_id.php";
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	36	if ( file_exists($cache_file) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	37	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	38	require($cache_file);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	39	if ( isset($_cache_data) && isset($_cache_ttl) && isset($_cache_timestamp) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	40	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	41	$cache_expire = $_cache_timestamp + ( 60 * $_cache_ttl);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	42	if ( $cache_expire >= time() \|\| $_cache_ttl === -1 )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	43	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	44	return $_cache_data;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	45	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	46	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	47	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	48	return false;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	49	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	50
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	51	/**
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	52	* Stores an array by var_export()ing it and saving it to disk.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	53	* @param string Cache ID - human readable name for this store (letters, numbers, underscores)
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	54	* @param array Data to store
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	55	* @param int TTL for the cached array, in minutes. Defaults to 20. If set to -1, caches indefinitely.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	56	* @return bool True on success, false on failure
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	57	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	58
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	59	public function store($cache_id, $data, $ttl = 20)
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	60	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	61	if ( getConfig('cache_thumbs') != '1' )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	62	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	63	// caching disabled
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	64	return false;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	65	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	66	if ( !preg_match('/^[a-z0-9_]+$/', $cache_id) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	67	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	68	throw new Exception('Cache ID must be letters, numbers, and underscores.');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	69	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	70	if ( !is_int($ttl) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	71	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	72	throw new Exception('TTL must be an integer');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	73	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	74
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	75	$cache_file = ENANO_ROOT . "/cache/cache_$cache_id.php";
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	76	if ( file_exists($cache_file) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	77	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	78	@unlink($cache_file);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	79	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	80	$fh = @fopen($cache_file, 'w');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	81	if ( !$fh )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	82	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	83	throw new Exception('Failed to open file for writing.');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	84	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	85	$exported = Language::var_export_string($data);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	86	$now = time();
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	87	$content = <<<EOF
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	88	<?php
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	89	/**
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	90	* Automatically generated cache file.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	91	* Do not edit this file as it will expire and be overwritten $ttl minutes from its creation.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	92	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	93
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	94	\$_cache_ttl = $ttl;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	95	\$_cache_timestamp = $now;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	96	\$_cache_data = $exported;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	97
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	98	EOF;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	99	fwrite($fh, $content);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	100	fclose($fh);
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	101
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	102	return true;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	103	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	104
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	105	/**
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	106	* Deletes a cached item.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	107	* @param string Cache ID.
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	108	* @return bool true on success or if item doesn't exist, false on failure
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	109	*/
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	110
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	111	public function purge($cache_id)
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	112	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	113	if ( !preg_match('/^[a-z0-9_]+$/', $cache_id) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	114	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	115	throw new Exception('Cache ID must be letters, numbers, and underscores.');
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	116	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	117
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	118	$cache_file = ENANO_ROOT . "/cache/cache_$cache_id.php";
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	119	if ( file_exists($cache_file) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	120	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	121	if ( unlink($cache_file) )
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	122	{
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	123	return true;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	124	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	125	return false;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	126	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	127	return true;
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	128	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	129	}
935f3799b654 First stab at cache management backend. Everything seems to have been tested and working so far, but a number of things require a more specialized cache and can't go through the framework (e.g. user ranks which use references to map usernames to user IDs) Dan parents: diff changeset	130

author	Dan
	Mon, 30 Nov 2009 22:35:14 -0500
changeset 1142	c522ea3871a3
parent 1081	745200a9cc2a
child 1227	bdac73ed481e
permissions	-rw-r--r--