$mainframe->redirect(‘XXXXXXXXXXXX’); not working in IE

Question

$mainframe->redirect(‘XXXXXXXXXXXX’); 

not working in joomla although I have defined

global $mainframe;

Answer 1

use the code like that

global $mainframe; 
$redirect = "xxx.php";
$mainframe->redirect($redirect); 

or

global $mainframe; 
$mainframe->redirect($redirect);