Example of generating QR code with Thinkphp3.2 and phpqrcode

First, download phpqrcode and extract it to the project ThinkPHP\Library\Vendor directory.
Index_index.html (the template can be configured by yourself)

    尺寸大小：
            
    边距大小：
         
            1px
            2px
            3px
            5px
        
    容错级别：
        
        Low (7%)
        Medium (15%)
        Quartile (25%)
        High (30%)
        
    二维码内容：
            
    二维码logo：

Controller: IndexController.class.php

<?php
namespace Home\Controller;use Think\Controller;class IndexController extends Controller {    
public function index(){        
$config = array(            
&#39;maxSize&#39;    =>    3145728,
            &#39;rootPath&#39;   =>    &#39;./upload/&#39;,
            &#39;savePath&#39;   =>    &#39;&#39;,
            &#39;saveName&#39;   =>    array(&#39;uniqid&#39;,&#39;&#39;),
            &#39;exts&#39;       =>    array(&#39;jpg&#39;, &#39;gif&#39;, &#39;png&#39;, &#39;jpeg&#39;),
            &#39;autoSub&#39;    =>    true,
            &#39;subName&#39;    =>    array(&#39;date&#39;,&#39;Ymd&#39;),
        );        $upload = new \Think\Upload($config);// 实例化上传类
        // 上传单个文件
        $info   =   $upload->uploadOne($_FILES[&#39;test&#39;]);        
        if(!$info) {// 上传错误提示错误信息
            $qrcode_path_new = &#39;./Public/Home/images/code&#39;.&#39;_&#39;.date("Ymdhis").&#39;.png&#39;;            
            $content = $_POST[&#39;content&#39;];            
            $matrixPointSize = $_POST[&#39;matrixPointSize&#39;];            
            $matrixMarginSize = $_POST[&#39;matrixMarginSize&#39;];            
            $errorCorrectionLevel = $_POST[&#39;errorCorrectionLevel&#39;];
            makecode_no_pic($content,$qrcode_path_new,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel);            
            $this->assign(&#39;img&#39;,$qrcode_path_new);
        }else{            
        $qrcode_path = "./upload/".$info[&#39;savepath&#39;].$info[&#39;savename&#39;];            
        $content = $_POST[&#39;content&#39;];            
        $matrixPointSize = $_POST[&#39;matrixPointSize&#39;];            
        $matrixMarginSize = $_POST[&#39;matrixMarginSize&#39;];            
        $errorCorrectionLevel = $_POST[&#39;errorCorrectionLevel&#39;];            
        $url = "./upload/qrcode/".date("YmdHis").".png";
            makecode($qrcode_path,$content,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel,$url);            
            $this->assign(&#39;img&#39;,$url);
            }        
            $this->display();
    }
}

Then create a new function.php under the project Application/Home/Common

<?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(&#39;phpqrcode.phpqrcode&#39;);        
        $object = new \QRcode();        
        $qrcode_path_new = &#39;./Public/Home/images/code&#39;.&#39;_&#39;.date("Ymdhis").&#39;.png&#39;;//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(&#39;phpqrcode.phpqrcode&#39;);        
        $object = new \QRcode();        
        $object::png($content,$qrcode_path_new, $errorCorrectionLevel, $matrixPointSize, $matrixMarginSize);
    }

When there is no picture uploaded, the QR code generated is just a simple QR code. Only when a logo is uploaded, the QR code with the logo will be generated.

The picture below is the QR code generated when there is no logo:

The picture below is The QR code generated when a picture is uploaded:

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