Description:
------------
While implementing my own user--level database--based 
session handling class, found a *weird* thing: As stated in 
oficial PHP documentation on this page, rough--shaped 
garbage collecting function looks like:

function gc ($maxlifetime) {
  return true;
}

But I found that this function should have *NO* arguments! 
While having one argument, error message was like this:

Warning: Missing argument 1 for _sessiongc() in 
<mySessionMgmtClass.class.php> on line <lineNo>

I removed any arguments for this PHP function, and finally 
ended with this rough--shaped gc function, which works:

function gc() {
  $maxlifetime = ini_get ('session.gc_maxlifetime');
  return true;
}

I even looked around in php-4.3.4/ext/session/mod_user.c but
as I'm not a PHP engine developer, coudn't find any obvious 
cause of this.