Something

die(var_dump($width, $height, $type, $attr, getimagesize($file_path)));

results in:

int(3300) int(2550) int(2) string(26) "width="3300" height="2550"" array(7) { [0]=> int(3300) [1]=> int(2550) [2]=> int(2) [3]=> string(26) "width="3300" height="2550"" ["bits"]=> int(8) ["channels"]=> int(3) ["mime"]=> string(10) "image/jpeg" }