我有两张PNG图像，我想创建一个新的PNG图像。第一张图片将被强加。这些代码完美运行并产生预期的图像，但所有颜色都丢失了，输出是灰度图像。
这是我的代码
Phone.png文件为“http://i44.tinypic.com/2vwilb8.png” and background.png是“http://i43.tinypic.com/2194eu9.png”
$backgroundImage = 'background.png';
$userImage = "http://graph.facebook.com/4/picture?type=large";
$resultImage ='phone.png';
$background = imagecreatefrompng($backgroundImage);
$userResultImage = imagecreatefromjpeg($userImage);
$result = imagecreatefrompng($resultImage);
list($backgroundWidth, $backgroundHeight) = getimagesize($backgroundImage);
list($userImageWidth, $userImageHeight) = getimagesize($userImage);
list($resultRightItemWidth, $resultRightItemHeight) = getimagesize($resultImage);
$newWidth = 800;
$newHeight = 800;
$new = imagecreate($newWidth, $newHeight);
imagealphablending($new, false);
imagesavealpha($new, true);
imagecopy($new, $background, 0, 0, 0, 0, $backgroundWidth, $backgroundHeight);
imagecopy($new, $userResultImage, 40, 300, 0, 0, $userImageWidth, $userImageHeight);
header('Content-type: image/png');
imagepng($new,'asdas.png');
imagecopy($new, $result, 490, 170, 0, 0, $resultRightItemWidth, $resultRightItemHeight);
header('Content-type: image/png');
imagepng($new, $userID.'.png');