preventing simultaneuos read/write

[carl_]

Hello everyone,

I'm completely new to the idea of building database driven webpages and I'm trying to learn how to use PHP with MySQL.

My question is this: how do I prevent simultaneous read or write operations to session variables and database tables by different client browsers? Or is it possible to 'lock' sections of PHP code for use by a single client?

I'd be extremely grateful for any enlightenment on this.

Many thanks.

[Anon]

You don't have to worry about it.

Sessions are client specific so different clients can't interfere with each other.

MySQL has it's own built in locking mechanisms so two seperate processes cannot access the same table at the same time.