Cannot send session cache limiter !?

[proud]

I dont know what is wrong with this piece of code, although i get the message

(Welcome, you are still logged in) which means that the code has worked besides it i get this error message:

 

Warning:Cannot send session cache limiter - headers already sent (output started at C:\AppServ\www\checkLogin.php:2) in C:\AppServ\www\checkLogin.php on line 5

Welcome, you are still logged in.

 

 

this is my code for the page checklogin.php:

 

<?php

 

//start the session

session_start();

 

//check to make sure the session variable is registered

if(session_is_registered('username')){

 

//the session variable is registered, the user is allowed to see anything that follows

 

echo 'Welcome, you are still logged in.';

 

}

else{

 

//the session variable isn't registered, send them back to the login page

header( "Location: login.htm" );

}

 

?>

[Jessica]

Read the topic about header errors.

 

Is there spaces before your <?php