redirection trouble

[Beasts]

hi.
how do i make it so that if the URL is "http://mysite.com/index.php" then automatically redirect to "http://mysite.com/index.php?page=index"

[penagate]

You can do that easily using a .htaccess rule (assuming you're using Apache):

RewriteEngine On
RewriteCond %{QUERY_STRING} =""
RewriteRule test.php test.php?page=index [R=302,L]

Add a RewriteBase directive and/or change the redirection path as necessary.
Change R=302 to R=301 once you've got the redirection working correctly. 301 redirections are cacheable while 302s are not; 302 is thus preferred during debugging.

[Beasts]

i already knew how to do it in .htaccess but i was wondering if there is a way to do it in PHP

[penagate]

What's the point? It'll only be less efficient.

Nevertheless, if you must:

if (!isset($_GET['page']))
{
  header('HTTP/1.1 301 Moved Permanently');
  header("Location: http://{$_SERVER['HTTP_HOST']}/index.php?page=index");
  exit();
} 

[Beasts]

Thank You Very Much Penagate!!!