Code Coverage for /builds/kai/lggr/inc/LggrCacheFile.php

1	<?php
2	namespace Lggr;
3
4	/**
5	* @brief Caching class for file based cache.
6	*/
7	class LggrCacheFile extends AbstractLggrCache {
8
9	const MAXAGE = 300;
10
11	// 5 minutes
12	private $cachepath = null;
13
14	function __construct() {
15	$this->cachepath = __DIR__ . '/../cache/';
16	}
17
18	// constructor
19	public function store($key, $value) {
20	$fname = $this->getFilename($key);
21	$s = serialize($value);
22	file_put_contents($fname, $s);
23	}
24
25	// function
26	public function retrieve($key) {
27	$fname = $this->getFilename($key);
28	if (file_exists($fname) && is_readable($fname)) {
29	$ts = filemtime($fname);
30	if (time() - $ts > self::MAXAGE) {
31	unlink($fname);
32	return null;
33	} else {
34	$s = file_get_contents($fname);
35	return unserialize($s);
36	} // if
37	} else {
38	return null;
39	} // if
40	}
41
42	// function
43	public function purge($key) {
44	$fname = $this->getFilename($key);
45	unlink($fname);
46	}
47
48	// function
49	private function filterKey($key) {
50	$sTmp = str_replace(' ', '-', $key);
51	return preg_replace('/[^A-Za-z0-9\-]/', '', $sTmp);
52	}
53
54	// function
55	private function getFilename($key) {
56	return $this->cachepath . 'key_' . $this->filterKey($key) . '.data';
57	} // function
58	}
59