QuickBooks/Adapter/Client/Php.php
public function authenticate($user, $pass)
	{
		$req = new QuickBooks_Request_Authenticate($user, $pass);
		
		$resp = parent::__soapCall('authenticate', array( $req ));
		$tmp = current($resp);
		
		return current($tmp);
	}
public function authenticate($user, $pass)
	{
		$req = new QuickBooks_Request_Authenticate($user, $pass);
		
		$resp = parent::__soapCall('authenticate', array( $req ));
		$tmp = current($resp);
		
		return current($tmp);
	}
Authenticate against a QuickBooks SOAP server

@param string $user
@param string $pass
@return array