si usas php, tenes la funcion header()
<?php
/* Redirect to a different page in the current directory that was requested */
$host = $_SERVER['HTTP_HOST'];
$uri = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
$extra = 'myindex.php';
header("Location: http://$host$uri/$extra");
exit;
?>
tenes la guia que lo explica en:
http://www.php.net/manual/es/function.header.php
fijate si te sirve.....