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 ran into the same problem when converting PDFs to PNGs, and I used flattenImages().

        //get the first page of the PDF
        $im = new imagick( $file.'[0]' );

        //set the background to white
        $im->setImageBackgroundColor('white');

        //flatten the image
        $im = $im->flattenImages(); 

        //do the rest of the image operations
        $im->setResolution( 181, 181 );
        $im->setCompressionQuality(100);
        $im->resizeImage ( 181, 181,  imagick::FILTER_LANCZOS, 1, TRUE);
        $im->setImageFormat('png');
        $imageName = $title.'_thumb.png';