Файл: oc-includes/osclass/classes/Cache.php
Строк: 79
<?php if ( ! defined('ABS_PATH')) exit('ABS_PATH is not loaded. Direct access is not allowed.');
/*
* Copyright 2014 Osclass
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
define('CACHE_PATH', osc_uploads_path());
/**
* This is the simplest cache service on earth.
*
* @author Osclass
* @version 1.0
*/
class Cache {
private $objectKey;
private $expiration;
public function __construct($objectKey, $expiration = 900 /* 15 minutes */) {
$this->objectKey = $objectKey;
$this->expiration = $expiration;
}
public function __destruct() {
}
/**
* @return true if the object is cached and has not expired, false otherwise.
*/
public function check() {
$path = $this->preparePath();
if(!file_exists($path)) return false;
if(time() - filemtime($path) > $this->expiration) {
unlink($path);
return false;
}
return true;
}
/**
* Stores the object passed as parameter in the cache backend (filesystem).
*/
public function store($object) {
$serialized = serialize($object);
file_put_contents($this->preparePath(), $serialized);
}
/**
* Returns the data of the current cached object.
*/
public function retrieve() {
$content = file_get_contents($this->preparePath());
return unserialize($content);
}
/**
* Constructs the path to object in filesystem.
*/
private function preparePath() {
return CACHE_PATH . $this->objectKey . '.cache';
}
}
?>