PHP生成带有logo和底图的支付二维码

$text = "这只是一个测试二维码！";
$QRDir = "./base.png"; //生成的图片路径
$errorCorrectionLevel = 'H';//容错率
$matrixPointSize = 10;//生成的图片的大小
$margin = 2; 

$qrCode = new QRcode();
$qrCode->png($text, $QRDir, $errorCorrectionLevel, $matrixPointSize, $margin);

imagecreatefromgif()：创建一块画布，并从 GIF 文件或 URL 地址载入一副图像 
imagecreatefromjpeg()：创建一块画布，并从 JPEG 文件或 URL 地址载入一副图像 
imagecreatefrompng()：创建一块画布，并从 PNG 文件或 URL 地址载入一副图像 
imagecreatefromwbmp()：创建一块画布，并从 WBMP 文件或 URL 地址载入一副图像 
imagecreatefromstring()：创建一块画布，并从字符串中的图像流新建一副图像

$QRImageInfo = imagecreatefromspng($QRDir);
$QR_width = imagesx($QRImageInfo);
$QR_height = imagesy($QRImageInfo);

$width = 539;
$height = 539;
$newImage = imagecreatetruecolor($width,$height);//创建一个图像资源
$newImage_white = imagecolorallocate($newImage, 255,255,255);//给创建好的图像资源设置白色背景
imagefill($newImage, 0, 0, $newImage_white);//填充$newImage

imagecopyresized($newImage, $QRImageInfo,0, 0, 0, 0, 539, 539, $QR_width, $QR_height);

$backgroundDir = "./background.png";//事先准备好的背景图片
$backgroundImg = imagecreatefromspng($backgroundDir); 
imagecopyresampled($backgroundImg, $newImage, 203, 330, 0, 0, 539, 539, 539, 539);

$resultPngPic = "./resultPngPicWithoutLogo.png";//设置最后生成图像的路径
imagepng($backgroundImg,$resultPngPic);
imagedestroy($newImage);//销毁中间创建的$newImage资源

$logoDir = "./logo.png";
$resource = imagecreatefrompng($logoDir);
$image_width = imagesx($resource);
$image_height = imagesy($resource);

$targetImg = imagecreatetruecolor($logo_width, $logo_height);
imagesavealpha($targetImg, true);//保留图片的透明通道
$targetImgBackground = imagecolorallocatealpha($targetImg, 255, 255, 255, 127);//将目标图片设置成透明背景
imagefill($targetImg, 0, 0, $targetImgBackground);//填充透明背景

$r = $radius; //圆角半径
function litter_corner($radius){
    $img = imagecreatetruecolor($radius, $radius);
    imagesavealpha($img, true);
    $bgcolor = imagecolorallocatealpha($img, 0, 0, 0,127);
    $fgcolor = imagecolorallocate($img, 0, 0, 0);
    imagefill($img, 0, 0, $bgcolor);
    imagefilledarc($img, $radius, $radius, $radius*2, $radius*2, 180, 270, $fgcolor, IMG_ARC_PIE);
    imagecolortransparent($img, $fgcolor);
    return $img;
}
// lt(左上角)
$lt_corner = litter_corner($radius);
imagecopymerge($resource, $lt_corner, 0, 0, 0, 0, $radius, $radius, 100);
// lb(左下角)
$lb_corner = imagerotate($lt_corner, 90, 0);
imagecopymerge($resource, $lb_corner, 0, $image_height - $radius, 0, 0, $radius, $radius, 100);
// rb(右上角)
$rb_corner  = imagerotate($lt_corner, 180, 0);
imagecopymerge($resource, $rb_corner, $image_width - $radius, $image_height - $radius, 0, 0, $radius, $radius, 100);
// rt(右下角)
$rt_corner  = imagerotate($lt_corner, 270, 0);
imagecopymerge($resource, $rt_corner, $image_width - $radius, 0, 0, 0, $radius, $radius, 100);

$image = "logoFinal.png";
imagepng($resource,$image);

function radius_img($imgpath, $radius = 15) {
        $ext     = pathinfo($imgpath);
        $src_img = null;
        switch ($ext['extension']) {
            case 'jpg':
                $src_img = imagecreatefromjpeg($imgpath);
                break;
            case 'png':
                $src_img = imagecreatefrompng($imgpath);
                break;
        }
        $wh = getimagesize($imgpath);
        $w  = $wh[0];
        $h  = $wh[1];
        // $radius = $radius == 0 ? (min($w, $h) / 2) : $radius;
        $img = imagecreatetruecolor($w, $h);
        //这一句一定要有
        imagesavealpha($img, true);
        //拾取一个完全透明的颜色,最后一个参数127为全透明
        $bg = imagecolorallocatealpha($img, 255, 255, 255, 127);
        imagefill($img, 0, 0, $bg);
        $r = $radius; //圆 角半径
        for ($x = 0; $x < $w; $x++) {
            for ($y = 0; $y < $h; $y++) {
                $rgbColor = imagecolorat($src_img, $x, $y);
                if (($x >= $radius && $x <= ($w - $radius)) || ($y >= $radius && $y <= ($h - $radius))) {
                    //不在四角的范围内,直接画
                    imagesetpixel($img, $x, $y, $rgbColor);
                } else {
                    //在四角的范围内选择画
                    //上左
                    $y_x = $r; //圆心X坐标
                    $y_y = $r; //圆心Y坐标
                    if (((($x - $y_x) * ($x - $y_x) + ($y - $y_y) * ($y - $y_y)) <= ($r * $r))) {
                        imagesetpixel($img, $x, $y, $rgbColor);
                    }
                    //上右
                    $y_x = $w - $r; //圆心X坐标
                    $y_y = $r; //圆心Y坐标
                    if (((($x - $y_x) * ($x - $y_x) + ($y - $y_y) * ($y - $y_y)) <= ($r * $r))) {
                        imagesetpixel($img, $x, $y, $rgbColor);
                    }
                    //下左
                    $y_x = $r; //圆心X坐标
                    $y_y = $h - $r; //圆心Y坐标
                    if (((($x - $y_x) * ($x - $y_x) + ($y - $y_y) * ($y - $y_y)) <= ($r * $r))) {
                        imagesetpixel($img, $x, $y, $rgbColor);
                    }
                    //下右
                    $y_x = $w - $r; //圆心X坐标
                    $y_y = $h - $r; //圆心Y坐标
                    if (((($x - $y_x) * ($x - $y_x) + ($y - $y_y) * ($y - $y_y)) <= ($r * $r))) {
                        imagesetpixel($img, $x, $y, $rgbColor);
                    }
                }
            }
        }
        return $img;
    }
$final_logo = radius_img($resource);
imagepng($final_logo, "logoFinal.png");

$QR = imagecreatefrompng("qr.png");//这里qr.png是二维码的图片
$logo = imagecreatefrompng("logoFinal.png");//圆角二维码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);
$QRHasLogo = "QRHasLogo.png";//最终得到的带有logo的二维码
imagepng($QR, $QRHasLogo);