<?php
require_once('phpqrcode/phpqrcode.php');
$url = $_GET['url'];

if(!stristr($url,'www.21ic.com') && !stristr($url,'embed.21ic.com') && !stristr($url,'power.21ic.com')&& !stristr($url,'m.21ic.com')){
	exit;
}
Header("Content-type: image/png");
QRcode::png($url,false,QR_ECLEVEL_L,5,1);
?>