Header Location Not working

Space between header("Location")

If header not working in some server. On that time just check syntax carefully that you write.

Correct syntax for header is:

header(“Location:index.php”); (Correct)

header(“Location : index.php”); (Wrong)

Note: No space between Location and “:” and your page.

Put ob_start();

Second option you can check by putting ob_start(); in beginning of your code...