On Fri, March 16, 2007 10:37 pm, Rod Person wrote: > select user_id from t_users where user_id = (select max(user_id) from > t_users) Noooooooooooooooooooooo! This is a "race condition" Imagine, if you will, that *TWO* users sign up and create characters on your site at the exact same time: Lee Francis insert into user... insert into user... auto_inc: #5 auto_inc: #6 select max(user_id) select max(user_id) #6 #6 You'll tell BOTH of them that they are #6, even though Lee was really #5. Yes, this can easily happen. In fact, on a moderately busy site, it *WILL* happen quite quickly. You REALLY do want to use http://php.net/mysql_insert_id to find out the last ID used FOR THIS CONNECTION. The MySQL guys worked really really really hard to do this right. Don't be an [bleep] and not use their hard-won experience. -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some starving artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
