Thank you microsoft for yet another bug that ruined some store processing code. There two bugs to look out for: not using a capital L, and not killing the process.
Example:
header(‘location http://www.mywebsite.com/relocate/’);
Bad code for internet explorer. To assure you are relocated and the page you are calling the header doesn’t magically reload itself and ruin your life:
header(‘Location http://www.mywebsite.com/relocate/’);
die();
die();