自定义session储存 FILE 方式类

在php.ini配置文件中更改设置 (Registered_save_handlers 有三种方式 files user memcache)

session.save_handler = user 表示用户自定义session类

';
            return true;
        }
        //关闭
        public static function close(){
            echo 'close
';
           return true;
        }
        //读取 echo 
        public static function read($sid){
            echo 'read
';   
            $filename = self::$path.'yang_'.$sid;
           // return 'username|s:12:"津沙港湾";age|i:33;sex|s:4:"male";';
           return @file_get_contents($filename);
        }
        //写入 $_SESSION['username']='yang'
        public static function write($sid,$data){
            echo 'write
'; 
            $filename = self::$path.'yang_'.$sid;
            echo $filename.'
';
            echo $data.'
';
            return  file_put_contents($filename, $data);            
        }
        //销毁 session_destroy
        public static function destroy($sid){
            echo 'destroy
';     
            $filename = self::$path.'yang_'.$sid;
            echo $filename.'
';
            return @unlink($filename);
            
        }
        //回收垃圾
        public static function gc($maxlifetime){
            echo 'gc
';
            foreach(glob(self::$path.'yang_*') as $file){
                echo $file.'
';
                //只删除过期
                if((filemtime($file)+$maxlifetime) < time()){
                unlink($file);
                }
            }
        }
 }
 
 FileSession::start();