关于使用phpqrcode二维码无法显示的问题

define('bestfenxiao_PATH', dirname(__FILE__).'/../');require_once bestfenxiao_PATH.'source/init.php';$type = isset($_GET['type']) ? $_GET['type'] : redirect($_G['config']['site_url'].'/static/images/no_qrcode.png');$id = isset($_GET['id']) ? $_GET['id'] : redirect($_G['config']['site_url'].'/static/images/no_qrcode.png');switch($type){case 'home':$url = $_G['config']['wap_site_url'].'/home.php?id='.$id;break;case 'page_cat':$url = $_G['config']['wap_site_url'].'/pagecat.php?id='.$id;break;case 'page':$url = $_G['config']['wap_site_url'].'/page.php?id='.$id;break;case 'good_cat':$url = $_G['config']['wap_site_url'].'/goodcat.php?id='.$id;break;case 'good':$url = $_G['config']['wap_site_url'].'/good.php?id='.$id.(isset($_GET['activity']) ? '&activity='.$_GET['activity'] : '');break;case 'ucenter':$url = $_G['config']['wap_site_url'].'/ucenter.php?id='.$id;break;case 'activity':$url = urldecode($_GET['url']);break;default:redirect($_G['config']['site_url'].'/static/images/no_qrcode.png');}import('phpqrcode');ob_clean();//这个一定要加上，清除缓冲区QRcode::png(urldecode($url),false,0,7,2);