Query Help Needed

[SieRobin]

I have a chat on my website, and I was wondering if there was a way to delete the last row in the table of your database once the number of messages reaches a certain amount?

Basically I just want it so, if the number of posts reaches 30, it deletes the last message in the table, so there is a constant 30 messages, instead of deleting everything.

[redarrow]

An example ok del from date a start point only.


[code]
[php]
// this gets the date 2 weeks ago and formats it
$oldDate = date("Y-m-d H:i:s", strtotime(-2 weeks));
// delete anything "younger" then that
$sql = "DELETE FROM table WHERE DATE < '$oldDate';";
[/php]
[/code]