PHP secuirty

[adam291086]

Someone is able to hack my site. I am using

 

session_start();
// is the one accessing this page logged in or not?
if (!isset ($_SESSION['username'])) 
{
// not logged in, move to login page   
echo "<meta http-equiv=\"refresh\" content=\"0;url=http://www.admin.bcyorkshire.co.uk\">";
}

 

to stop people getting in. I i never stopped google from referencing the pages and they are able to get in by stopping the refresh. How can i secure the pages further?

[RussellReal]

use die instead of echo

 

or ofcourse use

 

header("Location: [ADDRESS]");