Select rows from MySQL table where PHP timestamp is older than X

Question

I have a user table, where users need to be approved, i want to show users who are not approved and is registered more than 7 days ago.

My user_regdate is a timestam

Answer 1

Primitive solution at best, but im not the best at MySQL time calculation

$timestamp = strtotime("-7 days");
mysql_query("SELECT * FROM users WHERE user_regdate < $timestamp AND approved = 0 ORDER BY id");