QuickBooks/Driver.php
final public function authCheck($ticket)
	{
		$err = '';
		$this->_callHook(QUICKBOOKS_DRIVER_HOOK_AUTHCHECK, $ticket, $err, array());
		
		return $this->_authCheck($ticket);
	}
final public function authCheck($ticket)
	{
		$err = '';
		$this->_callHook(QUICKBOOKS_DRIVER_HOOK_AUTHCHECK, $ticket, $err, array());
		
		return $this->_authCheck($ticket);
	}
Check to see whether or not a ticket is for a valid, unexpired login session

@param string $ticket	The login session ticket to check
@return boolean 			Whether or not the ticket is valid