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<?php |
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/** |
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* Created by PhpStorm. |
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* User: jaredchu |
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* Date: 04/08/2017 |
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* Time: 11:36 |
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*/ |
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namespace JC; |
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/** |
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* Class CacheManager |
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* @package JC |
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* |
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* Manage the list of caching file and object |
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* Save in $cFilename |
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*/ |
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class CacheManager |
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{ |
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/** |
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* @var string |
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*/ |
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public static $cFileName = 'jc-simple-cache-list'; |
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/** |
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* @param $cFileName |
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*/ |
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public static function setCFileName($cFileName) |
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{ |
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static::$cFileName = $cFileName; |
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} |
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/** |
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* @return string |
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*/ |
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public static function getCFileName() |
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{ |
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return static::$cFileName; |
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} |
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/** |
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* @return string |
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* |
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* Return absolute file path which store cache list |
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*/ |
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public static function getCFilePath() |
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{ |
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return sys_get_temp_dir() . '/' . static::getCFileName(); |
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} |
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/** |
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* @param $key |
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* @return bool|string |
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* |
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* Return absolute file path of caching object |
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*/ |
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public static function get($key) |
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{ |
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$cacheList = static::getCacheList(); |
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if (isset($cacheList[$key])) { |
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if (($cacheList[$key][0] == 0 || $cacheList[$key][0] >= time())) { |
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return $cacheList[$key][1]; |
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} else { |
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unlink($cacheList[$key][1]); |
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static::remove($key); |
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} |
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} |
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return false; |
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} |
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/** |
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* @param $key |
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* @param $filePath |
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* @return bool |
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* |
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* Save $key and $filePath in cacheList |
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*/ |
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public static function set($key, $filePath, $ttl) |
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{ |
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$cacheList = static::getCacheList(); |
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if ($ttl != 0) { |
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$ttl += time(); |
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} |
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$cacheList[$key] = [$ttl, $filePath]; |
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return static::setCacheList($cacheList); |
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} |
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/** |
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* @param $key |
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* @return bool |
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* |
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* Remove caching object file and remove from cache list |
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*/ |
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public static function remove($key) |
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{ |
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$cacheList = static::getCacheList(); |
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unset($cacheList[$key]); |
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return static::setCacheList($cacheList); |
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} |
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/** |
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* @param $key |
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* @return bool |
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*/ |
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public static function has($key) |
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{ |
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$cacheList = static::getCacheList(); |
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return array_key_exists($key, $cacheList); |
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} |
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/** |
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* @return array |
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* |
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* Return cache list in array |
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*/ |
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protected static function getCacheList() |
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{ |
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if (file_exists(static::getCFilePath())) { |
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return static::decode(file_get_contents(static::getCFilePath())); |
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} |
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return array(); |
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} |
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/** |
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* @param $cacheList |
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* @return bool |
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*/ |
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protected static function setCacheList($cacheList) |
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{ |
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return (bool)file_put_contents(static::getCFilePath(), static::encode($cacheList)); |
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} |
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/** |
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* @param $array |
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* @return string |
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*/ |
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protected static function encode($array) |
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{ |
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return json_encode($array); |
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} |
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/** |
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* @param $string |
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* @return array |
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*/ |
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protected static function decode($string) |
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{ |
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return json_decode($string, true); |
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} |
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} |
jaredchu /
Simple-Cache
