Spezifische Schritte zum Generieren von QR-Code mit yii2

Yii::$enableIncludePath = false;
Yii::import ('application.extensions.phpqrcode.phpqrcode', 1 );

public function actionQrcode(){
        $this->breadcrumbs=array_merge($this->breadcrumbs,array(
                '生成二维码'
        ));
        $qrcode_path='';
        $file_tmp_name='';
        $errors=array();
        if(!empty($_POST)){
            $content = trim($_POST['content']); //二维码内容
            $contentSize=$this->getStringLength($content);
            if($contentSize>290){
                $errors[]='字数过长，不能多于150个字符！';
            }
            Yii::$enableIncludePath = false;
            Yii::import ('application.extensions.phpqrcode.phpqrcode', 1 );
            if(isset($_FILES['upimage']['tmp_name']) && $_FILES['upimage']['tmp_name'] && is_uploaded_file($_FILES['upimage']['tmp_name'])){
                if($_FILES['upimage']['size']>512000){
                    $errors[]="你上传的文件过大，最大不能超过500K。";
                }
                $file_tmp_name=$_FILES['upimage']['tmp_name'];
                $fileext = array("image/pjpeg","image/jpeg","image/gif","image/x-png","image/png");
                if(!in_array($_FILES['upimage']['type'],$fileext)){
                    $errors[]="你上传的文件格式不正确，仅支持 png, jpg, gif格式。";
                }
            }
            $tpgs=$_POST['tpgs'];//图片格式
            $bas_path=dirname ( Yii::app ()->BasePath );
            $qrcode_bas_path=$bas_path.'/upload/qrcode/';
            if(!is_dir($qrcode_bas_path)){
                mkdir($qrcode_bas_path, 0777, true);
            }
            $uniqid_rand=date("Ymdhis").uniqid(). rand(1,1000);
            $qrcode_path=$qrcode_bas_path.$uniqid_rand. "_1.".$tpgs;
            $qrcode_path_new=$qrcode_bas_path.$uniqid_rand."_2.".$tpgs;
            if(Helper::getOS()=='Linux'){

                $mv = move_uploaded_file($file_tmp_name, $qrcode_path);
            }else{
                //解决windows下中文文件名乱码的问题
                $save_path = Helper::safeEncoding($qrcode_path,'GB2312');
                if(!$save_path){
                    $errors[]='上传失败，请重试！';
                }
                $mv = move_uploaded_file($file_tmp_name, $qrcode_path);
            }
            if(empty($errors)){
                $errorCorrectionLevel = $_POST['errorCorrectionLevel'];//容错级别
                $matrixPointSize = $_POST['matrixPointSize'];//生成图片大小
                $matrixMarginSize = $_POST['matrixMarginSize'];//边距大小
                //生成二维码图片
                QRcode::png($content,$qrcode_path_new, $errorCorrectionLevel, $matrixPointSize, $matrixMarginSize);
                $QR = $qrcode_path_new;//已经生成的原始二维码图
                $logo = $qrcode_path;//准备好的logo图片
                if (file_exists($logo)) {
                    $QR = imagecreatefromstring(file_get_contents($QR));
                    $logo = imagecreatefromstring(file_get_contents($logo));
                    $QR_width = imagesx($QR);//二维码图片宽度
                    $QR_height = imagesy($QR);//二维码图片高度
                    $logo_width = imagesx($logo);//logo图片宽度
                    $logo_height = imagesy($logo);//logo图片高度
                    $logo_qr_width = $QR_width / 5;
                    $scale = $logo_width/$logo_qr_width;
                    $logo_qr_height = $logo_height/$scale;
                    $from_width = ($QR_width - $logo_qr_width) / 2;
                    //重新组合图片并调整大小
                    imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,
                    $logo_qr_height, $logo_width, $logo_height);
                    //输出图片
//                     header("Content-type: image/png");
                    imagepng($QR,$qrcode_path);
                    imagedestroy($QR);
                }else{
                    $qrcode_path=$qrcode_path_new;
                }
                $qrcode_path=str_replace($bas_path,'', $qrcode_path);
            }else{
                $qrcode_path='';
            }
        }
        $data=array('data'=>array('errors'=>$errors,'qrcode_path'=>$qrcode_path));
        $this->render ( 'qrcode',$data);
    }