XOOPS / XoopsCore25

// Set up the appropriate image handling functions based on the original image's mime type

switch ($imageMimetype) {

    case 'image/gif':

        // We will be converting GIFs to PNGs to avoid transparency issues when resizing GIFs

        // This is maybe not the ideal solution, but IE6 can suck it

        $output_function = 'imagepng';

        $imageMimetype = 'image/png'; // We need to convert GIFs to PNGs

        $do_sharpen = false;

        $quality = round(10 - ($quality / 10)); // We are converting the GIF to a PNG and PNG needs a compression

                                                // level of 0 (no compression) through 9 (max)

        break;

    case 'image/png':

        $output_function = 'imagepng';

        $do_sharpen = false;

        $quality = round(10 - ($quality / 10)); // We are converting the GIF to a PNG and PNG needs a compression

                                                // level of 0 (no compression) through 9 (max)

        break;

    case 'image/png':

        $output_function = 'imagepng';

        $do_sharpen = false;

        $quality = round(10 - ($quality / 10)); // PNG needs a compression level of 0 (no compression) through 9

        break;

    case 'image/jpeg':

        $output_function = 'imagejpeg';

        $do_sharpen = true;