Header location not working properly

Question

I have a php script that renders an image (with imagick) and saves it to some directory \"SITE_ROOT.$filePath\", then does a header(\'Location: \' . SITE_

Answer 1

header('Location: ' . $filePath);

SITE_ROOT is the location of the htdocs directory on the server; but header Location should be the path to the file relative to the htdocs directory