(. ) .
, checkbox. kurs[], , checkbox kurs, checkbox .. , , checkbox, , .
, , 1.php ( , action). GET, POST. , . - , , . , ().
PHP-
" OnLine"
, - , , . " OnLine". , IP-, IP-, . session (SID), .
session
CREATE TABLE session (
id_session tinytext NOT NULL,
putdate datetime NOT NULL default '0000-00-00 00:00:00',
user tinytext NOT NULL
) TYPE=MyISAM;
- id_session, , SID , putdate, , user, , , . , $_SESSION['user'] - PHP,
, require_once() .