<form action="{:U('index/index')}" enctype="multipart/form-data"  method = "post">

    <b>尺寸大小：</b>

        <input type="text" name = "matrixPointSize">    <br>

    <b>边距大小：</b>

        <select class="form-control" name="matrixMarginSize" >

            <option value="1" selected="selected">1px</option>

            <option value="2">2px</option>

            <option value="3">3px</option>

            <option value="4">5px</option>

        </select><br>

    <b>容错级别：</b>

        <select class="form-control" name="errorCorrectionLevel" id="errorCorrectionLevel">

        <option value="L">Low (7%)</option>

        <option value="M" selected="selected">Medium (15%)</option>

        <option value="Q">Quartile (25%)</option>

        <option value="H">High (30%)</option>

        </select><br>

    <b>二维码内容：</b>

        <input type="text" name = "content">    <br>

    <b>二维码logo：</b>

        <input type="file" name = "test" /><br><br>

    <input type="submit" value = "生成二维码">

</form>
<img src="{$img}" alt="">

<?php

namespace Home\Controller;

use Think\Controller;

class IndexController extends Controller {

    public function index(){

        $config = array(

            'maxSize'    =>    3145728,

            'rootPath'   =>    './upload/',

            'savePath'   =>    '',

            'saveName'   =>    array('uniqid',''),

            'exts'       =>    array('jpg', 'gif', 'png', 'jpeg'),

            'autoSub'    =>    true,

            'subName'    =>    array('date','Ymd'),

        );

        $upload = new \Think\Upload($config);// 实例化上传类

        // 上传单个文件

        $info   =   $upload->uploadOne($_FILES['test']);

        if(!$info) {// 上传错误提示错误信息

            $qrcode_path_new = './Public/Home/images/code'.'_'.date("Ymdhis").'.png';

            $content = $_POST['content'];

            $matrixPointSize = $_POST['matrixPointSize'];

            $matrixMarginSize = $_POST['matrixMarginSize'];

            $errorCorrectionLevel = $_POST['errorCorrectionLevel'];

            makecode_no_pic($content,$qrcode_path_new,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel);

            $this->assign('img',$qrcode_path_new);

        }else{

            $qrcode_path = "./upload/".$info['savepath'].$info['savename'];

            $content = $_POST['content'];

            $matrixPointSize = $_POST['matrixPointSize'];

            $matrixMarginSize = $_POST['matrixMarginSize'];

            $errorCorrectionLevel = $_POST['errorCorrectionLevel'];

            $url = "./upload/qrcode/".date("YmdHis").".png";

            makecode($qrcode_path,$content,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel,$url);

            $this->assign('img',$url);

            }

        $this->display();

    }

}

<?php

function makecode($qrcode_path,$content,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel,$url){

        /**     参数详情：

         *      $qrcode_path:logo地址

         *      $content:需要生成二维码的内容

         *      $matrixPointSize:二维码尺寸大小

         *      $matrixMarginSize:生成二维码的边距

         *      $errorCorrectionLevel:容错级别

         *      $url:生成的带logo的二维码地址

         * */

        ob_clean ();

        Vendor('phpqrcode.phpqrcode');

        $object = new \QRcode();

        $qrcode_path_new = './Public/Home/images/code'.'_'.date("Ymdhis").'.png';//定义生成二维码的路径及名称

        $object::png($content,$qrcode_path_new, $errorCorrectionLevel, $matrixPointSize, $matrixMarginSize);

        $QR = imagecreatefromstring(file_get_contents($qrcode_path_new));//imagecreatefromstring:创建一个图像资源从字符串中的图像流

        $logo = imagecreatefromstring(file_get_contents($qrcode_path));

        $QR_width = imagesx($QR);// 获取图像宽度函数

        $QR_height = imagesy($QR);//获取图像高度函数

        $logo_width = imagesx($logo);// 获取图像宽度函数

        $logo_height = imagesy($logo);//获取图像高度函数

        $logo_qr_width = $QR_width / 4;//logo的宽度

        $scale = $logo_width / $logo_qr_width;//计算比例

        $logo_qr_height = $logo_height / $scale;//计算logo高度

        $from_width = ($QR_width - $logo_qr_width) / 2;//规定logo的坐标位置

        imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);

        /**     imagecopyresampled ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h )

         *      参数详情：

         *      $dst_image:目标图象连接资源。

         *      $src_image:源图象连接资源。

         *      $dst_x:目标 X 坐标点。

         *      $dst_y:目标 Y 坐标点。

         *      $src_x:源的 X 坐标点。

         *      $src_y:源的 Y 坐标点。

         *      $dst_w:目标宽度。

         *      $dst_h:目标高度。

         *      $src_w:源图象的宽度。

         *      $src_h:源图象的高度。

         * */

        Header("Content-type: image/png");

        //$url:定义生成带logo的二维码的地址及名称

        imagepng($QR,$url);

    }

    function makecode_no_pic($content,$qrcode_path_new,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel){

        ob_clean ();

        Vendor('phpqrcode.phpqrcode');

        $object = new \QRcode();

        $object::png($content,$qrcode_path_new, $errorCorrectionLevel, $matrixPointSize, $matrixMarginSize);

    }