ThinkPHP文件緩存類代碼分享

 　　ThinkPHP文件緩存類代碼分享

        取自ThinkPHP的文件緩存類代碼，這裡就不多廢話了，小伙伴們自己看注釋吧。

　　?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 <?php /** * @desc 文件緩存 */ class Cache{ const C_FILE = '/Runtime/'; private $dir = ''; const EXT = '.tpl'; private $filename = ''; public function __construct($dir = ''){ $this->dir = $dir;   } /** * @desc 設置文件緩存 * @param string $key 文件名 * @param unkonw $data 緩存數據 * @param int $expire 過期時間 */ public function set($key,$data,$expire = 0){ $this->filename = dirname(__FILE__).self::C_FILE.$this->dir.$key.self::EXT; if(file_exists($this->filename)){ $res = $this->get($key); if(md5($res) == md5(json_encode($data) ) ){ return true; } } if(!is_dir(dirname($this->filename))){ mkdir(dirname($this->filename),0777); }   $source = fopen($this->filename,'w+'); fwrite($source,json_encode($data)); fclose($source); }   /** * @desc 獲取文件 * @param string $key 文件名 */ public function get($key){ //$filename = dirname(__FILE__).self::C_FILE.$this->dir.$key.self::EXT; if(!file_exists($this->filename)){ return '緩存文件已經不存在'; }else{ $res = file_get_contents($this->filename); } return $res; } /** * @desc 刪除文件 * @param string $key 文件名 */ public function del($key){ unlink($this->filename); }   }   $data = array('name'=>'song','age'=>20,'sex'=>'man','favority'=>array('apple','banana')); $cache = new Cache(); $cache->set('cache',$data); //$cache->get('cache'); //$cache->del('cache');