Transparent to white in Imagick for PHP

Question

I have a png image with a transparent background and I want to convert it to a jpg image with a white background.

The code is basically this:

$image          


        

Answer 1

I had a situation where I was trying to replace transparent background with white (but keep as png). Tried several different methods (including setImageAlphaChannel with setImageBackgroundColor). Combining OP's use of compositeImage I came up with this (hopefully helpful to someone else):

$pic = new Imagick($filelocation); //specify file name
$pic->setResourceLimit(6, 1);
if ($pic->getImageAlphaChannel()) {
    $white = new Imagick();
    $white->newImage($pic->getImageWidth(), $pic->getImageHeight(), "white");
    $white->compositeImage($pic, Imagick::COMPOSITE_OVER, 0, 0);
    $pic = clone $white;
    $white->destroy();
    $pic->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);
}
//do more things with $pic