PHP File Cache class

1<?PHP2     /**3 * @desc File Cache4      */5     classcache{6         ConstC_file = '/runtime/';7         Private $dir= ' ';8         ConstEXT = '. TPL ';9         Private $filename= ' ';Ten          Public function__construct ($dir= ' '){ One             $this-dir=$dir; A              -         } -         /** the * @desc Set File cache - * @param string $key file name - * @param unkonw $data cache Data - * @param int $expire Expiration Time +          */ -          Public functionSet$key,$data,$expire= 0){ +             $this->filename =dirname(__file__). Self::c_file.$this-dir.$key. Self::EXT; A             if(file_exists($this-filename)) { at                 $res=$this->get ($key); -                 if(MD5($res) ==MD5(Json_encode ($data) ) ){ -                     return true; -                 } -             } -             if(!Is_dir(dirname($this-filename))) { in                 mkdir(dirname($this->filename), 0777); -             } to              +             $source=fopen($this->filename, ' w+ '); -             fwrite($source, Json_encode ($data)); the             fclose($source); *         } $         Panax Notoginseng         /** - * @desc Get files the * @param string $key file name +          */ A          Public functionGet$key){ the             //$filename = dirname (__file__). Self::c_file. $this->dir. $key. Self::ext; +             if(!file_exists($this-filename)) { -                 return' Cache file no longer exists '; $}Else{ $                 $res=file_get_contents($this-filename); -             } -             return $res; the         } -         /**Wuyi * @desc Delete files the * @param string $key file name -          */ Wu          Public functionDel$key){ -             unlink($this-filename); About         } $          -     } -      -     $data=Array(' name ' = ' song ', ' Age ' =>20, ' sex ' = ' man ', ' favority ' =Array(' Apple ', ' banana ')); A     $cache=NewCache (); +     $cache->set (' Cache ',$data); the     //$cache->get (' cache '); - //$cache->del (' cache ');

PHP File Cache class