PHP实现提取一个图像文件并在浏览器上显示的代码(2)

[php]代码库

<?php
    header('Content-type:text/html; charset=GB2312');

    class imgdata{
        public $imgsrc;
        public $imgdata;
        public $imgform;
        public function getdir($source){
            $this->imgsrc  = $source;
        }
        public function img2data(){
            $this->_imgfrom($this->imgsrc);
            return $this->imgdata=fread(fopen($this->imgsrc,'rb'),filesize($this->imgsrc));        
        }
        public function data2img(){
            header("content-type:$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();
?>

[代码运行效果截图]