title: Warning: session_destroy()?
body: <p>Im trying to fix my login script, on my localhost it works but uploaded to my online test server, the logout is broken, I get this error: </p>
  
  <pre><code>Warning: session_destroy() [function.session-destroy]: Trying to destroy uninitialized session in htdocs/logout.php on line 17
  
  Warning: Cannot modify header information - headers already sent by (output started at htdocs/logout.php:17) in htdocs/logout.php on line 18
  
  Warning: Cannot modify header information - headers already sent by (output started at htdocs/logout.php:17) in www/htdocs/logout.php on line 34
  </code></pre>
  
  <p>Not quite sure what could be causing it since it was working on my localhost, any ideas?</p>