restricting access to a particular page

hi im trying to restricting access to a particular page but for some reason it non working
this is my code for the login

<?php
session_start();
include ('connect.php');

if (isset($_POST["submit"])){

      $user  = $_POST['u_name'];
      $pass  = $_POST['pwd'];
	  
if(!$user){
echo "please enter your username. <br>";
}
if(!$pass){
	echo "please enter your password";
	header('Refresh: 3; index.php');
	}
if ($user && $pass){
	   $sql= ("SELECT * FROM user_accounts WHERE username = '$user' AND password = '$pass' ");
	   $res = mysql_query($sql);
	   $count = mysql_num_rows($res);
	   
	  if ($count ==0){
	     echo "ur user name or password may be incorrect! try again";header('Refresh: 5; index.php');
		 
	  } ELSE {
	  if ($count ==1){
	   $row = msql_fetch_array($res);
	   $_SESSION['is_logged_in']=1;
	   echo "$user have successfully been logged in. ";
	   header('Refresh: 5; music.php');

	   }
	  }

}

}
?>

PHP:

and this is my code for the restricted Page.

<?php
session_start();
if(!isset($_SESSION['is_logged_in'])) {
    header("location:accessdenied.php");
} 

?>

PHP:

could any one help me with that Please

 

header("location:accessdenied.php");
exit; <-- give it a try

 

You must use exit in the restricted page script as said by gapz

 

thanx alot guys