wt-security / lib / Cache.php

Cache.php in WebTotem Security trunk, at lib/Cache.php

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1	<?php
2
3	if (!defined('WEBTOTEM_INIT') \|\| WEBTOTEM_INIT !== true) {
4	if (!headers_sent()) {
5	header('HTTP/1.1 403 Forbidden');
6	}
7	die("Protected By WebTotem!");
8	}
9	/**
10	* WebTotem Cache class for Wordpress.
11	*/
12	class WebTotemCache {
13
14	const WTOTEM_CACHE_STORAGE_TIME = 5; // cache storage time in minutes
15	/**
16	* Save multiple some data to cache.
17	*
18	* @param array $data
19	* Array of data.
20	* @param string $host_id
21	* The data belongs to this host.
22	* @param string $storage_time
23	* Cache storage time in minutes.
24	*
25	* @return array
26	* Returns TRUE after saving the data.
27	*/
28	public static function setData(array $data, $host_id, $storage_time = self::WTOTEM_CACHE_STORAGE_TIME) {
29
30	$cache = json_decode(WebTotemOption::getOption('cache'), true) ?: [];
31	$result = [];
32	foreach ($data as $key => $value){
33	if(!empty($value) and !array_key_exists('errors', $value)){
34	$expired = time() + ( $storage_time * 60 );
35	$cache[$host_id][$key] = ['data' => $value, 'expired' => $expired];
36	$result[$key] = true;
37	} else {
38	$result[$key] = false;
39	}
40	}
41
42	WebTotemOption::setOptions(['cache' => $cache]);
43
44	return $result;
45	}
46
47	/**
48	* Get data from cache.
49	*
50	* @param string $key
51	* Data key.
52	* @param string $host_id
53	* The data belongs to this host.
54	*
55	* @return array
56	* Returns saved data by key.
57	*/
58	public static function getdata($key, $host_id) {
59
60	$cache = json_decode(WebTotemOption::getOption('cache'), true) ?: [];
61	if(array_key_exists($host_id, $cache) and
62	array_key_exists($key, $cache[$host_id])
63	) { // and $cache[$host_id][$key]['expired'] > time()
64	return [
65	'data' => $cache[$host_id][$key]['data'],
66	'remained' => $cache[$host_id][$key]['expired'] - time(),
67	];
68	} else {
69	return [];
70	}
71
72	}
73
74	/**
75	* Delete data from cache.
76	*
77	* @param string $key
78	* Data key.
79	* @param string $host_id
80	* The data belongs to this host.
81	*
82	* @return bool
83	*/
84	public static function deleteData($key, $host_id) {
85
86	$cache = json_decode(WebTotemOption::getOption('cache'), true) ?: [];
87
88	unset($cache[$host_id][$key]);
89	WebTotemOption::setOptions(['cache' => $cache]);
90
91	return TRUE;
92
93	}
94
95	}
96