i haven't had the pleasure yet of writing for sites that generate so many
hits/sec that
they'd update the max value of any table at exactly the same time.

i usually ask for the max value about 2 milliseconds before doing the
And if the insert fails, i can auto-retry via a wrapper function after
I dare say i could work this way at facebook <g> (not that i really want to,
happy with where i am)

On Tue, Feb 2, 2010 at 11:46 PM, Ashley Sheridan

>  On Tue, 2010-02-02 at 23:19 +0100, Rene Veerman wrote:
> function getMax($table, $field)
> If I saw this sort of code I'd be appalled! It's possibly the worst way to
> get the auto increment value. You won't notice it testing the site out on
> your own, but all hell will break loose when you start getting a lot of
> hits, and two people cause an auto increment at the same time!
>   Thanks,
> Ash
> http://www.ashleysheridan.co.uk

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