//简易二维码

public function qrcode(){

        Vendor('phpqrcode.phpqrcode');

        //生成二维码图片

        $object = new \QRcode();

        $url='http://www.shouce.ren/';//网址或者是文本内容

        $level=3;

        $size=4;

        $errorCorrectionLevel =intval($level) ;//容错级别

        $matrixPointSize = intval($size);//生成图片大小

        $object->png($url, false, $errorCorrectionLevel, $matrixPointSize, 2);

    }

<?php

//高级使用带logo

public function qrcode(){

        Vendor('phpqrcode.phpqrcode');

        //生成二维码图片

        $object = new \QRcode();

        $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>150){

                $errors[]='字数过长，不能多于150个字符！';

            }

            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

            $qrcode_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;//原始图片路径

            $qrcode_path_new=$qrcode_bas_path.$uniqid_rand."_2.".$tpgs;//二维码图片路径

            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

                $object::png($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;

                }

            }else{

                $qrcode_path='';

            }

        }

        $data=array('data'=>array('errors'=>$errors,'qrcode_path'=>$qrcode_path));

        $this->assign('data',$data);

        $this->display();