PHP session_write_close() causes empty response
- by Xeoncross
When using session_write_close() in a shutdown function at the end of my script - PHP just dies. There is no error logged, response headers (firebug), or data (even whitespace!) returned. I have full PHP error reporting on with STRICT enabled and PHP 5.2.1.
My guess is that since session_write_close() is being called after shutdown - some fatal error is being encountered that crashes PHP before it has a chance to send the output or log anything.
This only happens on the logout page where I first:
...
//If there is no session to delete (not started)
if ( ! session_id())
{
return;
}
// Get the session name
$name = session_name();
// Delete the session cookie (if exists)
if ( ! empty($_COOKIE[$name]))
{
//Get the current cookie config
$params = session_get_cookie_params();
// Delete the cookie from globals
unset($_COOKIE[$name], $_SESSION);
//Delete the cookie on the user_agent
setcookie($name, '', time()-43200, $params['path'], $params['domain'], $params['secure']);
}
// Destroy the session
session_destroy();
...
then 2) do some more stuff 3) issue a redirect and 4) finally, after the whole page is done the register_shutdown_function(); I placed earlier runs and calls session_write_close() which saves the session to the database. The end.
Since this blank response only occurs on logout I'm guessing that I'm not restarting the session properly which is causing session_write_close() to die fatally at the end of the script.
