You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'delete from `is_last_visitor` where `time`<@del_time' at line 2<br>select @del_time:=`time` from `is_last_visitor` order by `time` desc limit 9, 1;
			delete from `is_last_visitor` where `time`<@del_time;