将图像从PNG转换为JPEG时,如何使用ImageMagick(带有php扩展名)将透明背景设置为白色?
$image = new IMagick('image.png'); $flattened = new IMagick(); $flattened->newImage($image->getImageWidth(), $image->getImageHeight(), new ImagickPixel("white")); $flattened->compositeImage($image, imagick::COMPOSITE_OVER, 0, 0); $flattened->setImageFormat("jpg"); $flattened->writeImage('image.jpg'); $image->clear(); $image->destroy(); $flattened->clear(); $flattened->destroy();