Method correctSizeWithRate

/*
 * Used for external images: Picasa, Facebook
 */
public static function correctSizeWithRate($width, $height, $corWidth = 100, $corHeight = 100, $diffThumbHeight = 0)
{
    $image['width'] = $corWidth;
    $image['height'] = $corHeight;
    if ((int) $diffThumbHeight > 0) {
        $ratio = $width / $height;
        $image['height'] = $ratio * $image['height'];
        return $image;
    }
    // Don't do anything with images:
    if ($width < $corWidth && $height < $corHeight) {
        $image['width'] = $width;
        $image['height'] = $height;
    } else {
        if ($width > $height) {
            if ($width > $corWidth) {
                $image['width'] = $corWidth;
                $rate = (int) $width / (int) $corWidth;
                $image['height'] = (int) $height / $rate;
            } else {
                $image['width'] = $width;
                $image['height'] = $height;
            }
        } else {
            if ($height > $corHeight) {
                $image['height'] = $corHeight;
                $rate = (int) $height / (int) $corHeight;
                $image['width'] = (int) $width / $rate;
            } else {
                $image['width'] = $width;
                $image['height'] = $height;
            }
        }
    }
    return $image;
}