thinkphp 使用phpqrcode生成带logo二维码 并生成海报

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1-下载类库

composer require aferrandini/phpqrcode -vvv

2-common的方法

//$text  文本的内容
//$logo  logo图片
function code($text,$logo){
    //二维码图片保存路径
    $pathname = APP_PATH . '/../Public/upload/';
    if(!is_dir($pathname)) { //若目录不存在则创建之
        mkdir($pathname);
    }
    vendor("phpqrcode.phpqrcode");

//二维码图片保存路径(若不生成文件则设置为false)
    $filename = $pathname . "/qrcode_" . time() . ".png";
//二维码容错率，默认L
    $level = "L";
//二维码图片每个黑点的像素，默认4
    $size = '10';
//二维码边框的间距，默认2
    $padding = 2;
//保存二维码图片并显示出来，$filename必须传递文件路径
    $saveandprint = true;

//生成二维码图片
    \PHPQRCode\QRcode::png($text,$filename,$level,$size,$padding,$saveandprint);

//二维码logo
    $QR = imagecreatefromstring(file_get_contents($filename));
    $logo = imagecreatefromstring(file_get_contents($logo));
    $QR_width = imagesx($QR);
    $QR_height = imagesy($QR);
    $logo_width = imagesx($logo);
    $logo_height = imagesy($logo);
    $logo_qr_width = $QR_width / 5;
    $scale = $logo_width / $logo_qr_width;
    $logo_qr_height = $logo_height / $scale;
    $from_width = ($QR_width - $logo_qr_width) / 2;
    imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
    imagepng($QR,$filename);
return $filename;
}

3--控制器

    public function code(){
        $logo=request()->file("file");
        $pathImg="";
        //移动文件到框架应用更目录的public/uploads/
        $info = $logo->move(ROOT_PATH . 'public' . DS . 'upload' . DS . 'admin' . DS . date('Y') . DS . date('m-d'),md5(microtime(true)));
        if ($info) {
            $pathImg = "./public/upload/admin/" . date('Y') . '/' . date('m-d') . '/' . $info->getFilename();
        } else {
            //错误提示用户
            return $this->error($logo->getError());
        }
        $logo=$pathImg;
        //二维码URL参数
        $text = "http://www.baidu.com";

        $filename=code($text,$logo);

        echo "<img src='$filename'>";



        $image = \think\Image::open('./public/images/q.png');
        // 给原图居中添加透明度为100的水印并保存到$a.png
        $a="./public/upload/11.jpg";
        $image->water('./public/upload/qrcode_1536730572.png',\think    \Image::WATER_CENTER,100)->save($a);

    }