How to redirect if the $_GET['ENTERACTIONHERE']; dosent exist

[codrgi]

I currently have a few $_GET[''] and need help on how to redirect someone to the index.php if they try a $_GET[''] that dosent exist, does anyone know how to do this?

[corbin]

You could make an array of $_GETs that are allowed and then check if each $_GET is in there.  Like so:

 

$allow_get = array('something', 'something_else');

foreach($_GET as $key => $val) {
    if(!in_array($key, $allow_get)) {
        header("Location: http://somewhere.com/somepage.php");
        exit;
    }
}

 

 

But I have to wonder why you care if someone makes up a $_GET.  Does it pose a security threat to your application?  It shouldn't x.x.

[JD*]

I like to use case statements to call my functions.

switch($_GET['action'])
{
   case "email":
   //do email action here
   break;

   default:
   // redirect to home
   break;
}