DELETE from sessions WHERE expiredt<(UNIX_TIMESTAMP()-10800)
CHECK TABLE sessions FAST QUICK
SELECT * FROM sessions WHERE sid='7n91cnh3dg5c7gsa2fo6k6dhl3'
INSERT INTO sessions SET sid='7n91cnh3dg5c7gsa2fo6k6dhl3', dt_in=NOW(), ip='3.218.247.159', host='', session_lng='rus', expiredt=(unix_timestamp()+10800)
SELECT * FROM sessions WHERE sid='7n91cnh3dg5c7gsa2fo6k6dhl3'
update sessions set script_name='/printer.php' WHERE sid='7n91cnh3dg5c7gsa2fo6k6dhl3'
select cat_id from www_tree where main_page=1