DELETE from sessions WHERE expiredt<(UNIX_TIMESTAMP()-10800)
CHECK TABLE sessions FAST QUICK
SELECT * FROM sessions WHERE sid='19ukj6e7i3dv7u4k7bgsk5cvku'
INSERT INTO sessions SET sid='19ukj6e7i3dv7u4k7bgsk5cvku', dt_in=NOW(), ip='44.200.169.48', host='', session_lng='rus', expiredt=(unix_timestamp()+10800)
SELECT * FROM sessions WHERE sid='19ukj6e7i3dv7u4k7bgsk5cvku'
update sessions set script_name='/printer.php' WHERE sid='19ukj6e7i3dv7u4k7bgsk5cvku'
select cat_id from www_tree where main_page=1