public function index()
 {
     //print_r($_SERVER['HTTP_HOST'].'/Uploads/img/201508/1439592462.jpg');
     yf_down('http://' . $_SERVER['HTTP_HOST'] . '/Uploads/img/201508/1439592462.jpg');
     //$this->assign_global();
     //Model('index')->get_jsdk();
 }
 public function qrcode()
 {
     if ($_POST) {
         $url = yf_empty($_POST['url'], "请输入要生成二维码的链接");
         $size = yf_empty(intval($_POST['size']), 10, 'size');
         $name = yf_empty($_POST['name'], '', true);
         $status = yf_empty(intval($_POST['status']), 0, true);
         if ($status == 0) {
             $path = yf_qrcode($url, $size, true, $name);
             yf_down($path);
         } else {
             $path = yf_qrcode($url, $size);
             //	$this->assign("code", $path);
         }
     }
     $this->display("qrcode.html");
 }