PHP sessions problem

Nibinaear

For some reason I can't put any html before my session_start function. There is no white space, text or echo statements before this function so I don't know why it is a problem. I should be able to output html and then use my session_start() shouldn't I?

Normally you just use html and then use your <?php tag as normal, but here it isn't working, what am I doing wrong?

Here's my code.

<html>
<head></head>

<body>
<?php
session_start();

if(!isset($_SESSION['userID']))
{
  echo "You are not logged in properly or you have already logged out, you need to visit our <a href = \"loginform.html\">Login page</a> to log in again.";
  exit();
}
else
{
  unset($_SESSION['username']);
  unset($_SESSION['userID']);
  echo "Successfully logged out. If you've just made a mistake and need to log back in again, you'll need to visit our <a href = \"loginform.html\">login page</a>.";
}

exit();
?>

</body>
</html>

I'm getting these errors:

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\Webpages\icp\logout.php:5) in C:\Webpages\icp\logout.php on line 6

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\Webpages\icp\logout.php:5) in C:\Webpages\icp\logout.php on line 6
You are not logged in properly or you have already logged out, you need to visit our Login page to log in again.

thorpe

I should be able to output html and then use my session_start() shouldn't I?

no.... you cannot send any output before calling session_start().

Nibinaear

But this is a html document. Am I supposed to output my html after the session stuff is over?

thorpe

session_start() must be called before any output is sent to the browser. i cant be any clearer.

Weedpacket

 <html>
<head></head>

<body>

This is text. It is before the session_start(); function. So you're wrong; you do have text before the session_start() function.