class imgdata{        public $imgsrc;        public $imgdata;        public $imgform;        public function getdir($source){                $this->imgsrc  = http://www.mamicode.com/$source;"content-type:$this->imgform");                echo $this->imgdata;                //echo $this->imgform;                //imagecreatefromstring($this->imgdata);        }        public function _imgfrom($imgsrc){                $info=getimagesize($imgsrc);                //var_dump($info);                return $this->imgform = $info[‘mime‘];        } }$n = new imgdata;$n -> getdir("1.jpg");$n -> img2data();$n -> data2img();