$background = imagecreatetruecolor(709,709);
$whiteBackground = imagecolorallocate($background, 255, 255, 255);
imagecopyresampled($whiteBackground, $new_img,(709-$imageWidth)/2,(709-$imageHeight)/2, 0, 0, $imageWidth, $imageHeight, $width, $height);
ImageJpeg ($background,"$path/$newName.$file_ext", 85);
我试图用 GD 创建图像, 带有白色背景 。 但是没有运气, 任何想法会做错什么? 我知道一个图像泵, 如果我拿掉白色背景部分, 所以它与创建图像代码没有错 。
谢谢 谢谢
您丢失了 imagefill () 方法 $background 上的 imagefill () 方法, 配有白色 。
并且可以将图像复制器从[色 复制到[图像],你应该从[图像]复制到[图像]。
$background = imagecreatetruecolor(709,709);
$whiteBackground = imagecolorallocate($background, 255, 255, 255);
imagefill($background,0,0,$whiteBackground);
imagecopyresampled($background, $new_img,(709-$imageWidth)/2,(709-$imageHeight)/2, 0, 0, $imageWidth, $imageHeight, $width, $height);
ImageJpeg ($background,"$path/$newName.$file_ext", 85);
希望这工作成功
$background = imagecreatetruecolor(709,709);
$whiteBackground = imagecolorallocate($background, 255, 255, 255);
imagefill($background,0,0,$whiteBackground);
$use_new_img = imagecreatefromjpeg($new_img);
imagecopyresampled($whiteBackground,$use_new_img,(709-$imageWidth)/2, (709-$imageHeight)/2, 0, 0,$imageWidth,$imageHeight,$width,$height);
ImageJpeg ($background,"$path/$newName.$file_ext", 85);
http://php.net/manual/en/formation.imagecopresampled.php 表示,前两个论点需要 $dst_image 和 $src_image 。
$new_img 在您的代码中不存在, 需要以 imagecreate trextcolor (); 创建
默认情况下, 它应该是我所相信的白色背景, 所以您不需要 image cololallate () 。
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