Subversion-Projekte lars-tiefland.php_share

Revision

Details | Letzte Änderung | Log anzeigen | RSS feed

Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
2 
/**
3 
 * Very simple filesystem cache
4 
 *
5 
 * $Id: Filesystem.php,v 1.1 2005/01/04 22:38:23 schst Exp $
6 
 *
7 
 * @package Services_Ebay
8 
 * @author  Stephan Schmidt <schst@php.net>
9 
 */
10 
 
11 
/**
12 
 * load base class for caches
13 
 */
14 
require_once SERVICES_EBAY_BASEDIR . '/Ebay/Cache.php';
15 
 
16 
/**
17 
 * Very simple filesystem cache
18 
 *
19 
 * $Id: Filesystem.php,v 1.1 2005/01/04 22:38:23 schst Exp $
20 
 *
21 
 * @package Services_Ebay
22 
 * @author  Stephan Schmidt <schst@php.net>
23 
 *
24 
 * @todo    add some checks before writing files
25 
 */
26 
class Services_Ebay_Cache_Filesystem extends Services_Ebay_Cache
27 
{
28 
   /**
29 
    * load a model from cache
30 
    *
31 
    * @param    string      model type
32 
    * @param    string      primary key
33 
    * @param    integer     detail level
34 
    * @return   array|boolean
35 
    */
36 
    public function load($Type, $Key, $DetailLevel)
37 
    {
38 
        $filename = $this->getCacheFilename($Type, $Key, $DetailLevel);
39 
        if (!file_exists($filename)) {
40 
        	return false;
41 
        }
42 
        if (!is_readable($filename)) {
43 
        	return false;
44 
        }
45 
 
46 
        // time the cache has been created
47 
        $created = filemtime($filename);
48 
        $props   = unserialize(file_get_contents($filename));
49 
 
50 
        // check validity
51 
        if (!$this->isValid($Type, $created, $props)) {
52 
        	return false;
53 
        }
54 
 
55 
        // return the cache
56 
        return $props;
57 
    }
58 
 
59 
   /**
60 
    * store model data in the cache
61 
    *
62 
    * @param    string      model type
63 
    * @param    string      primary key
64 
    * @param    integer     detail level
65 
    * @param    array       properties
66 
    * @return   boolean
67 
    */
68 
    public function store($Type, $Key, $DetailLevel, $Props)
69 
    {
70 
        $filename = $this->getCacheFilename($Type, $Key, $DetailLevel);
71 
    	return file_put_contents($filename, serialize($Props));
72 
    }
73 
 
74 
   /**
75 
    * get the name of the cache file
76 
    *
77 
    * @param    string      model type
78 
    * @param    string      primary key
79 
    * @param    integer     detail level
80 
    * @return   string
81 
    */
82 
    private function getCacheFilename($Type, $Key, $DetailLevel)
83 
    {
84 
        return sprintf('%s/%s_%s_%s.cache',$this->options['path'], $Type, md5($Key), $DetailLevel);
85 
    }
86 
}
87 
?>