Problem with PHP and MySQL

Hello guys, I have to create an order for a shopping cart, and I must recover the ID for that order, so I can use it for the order processing. My problem is that I don't know how to do this. Mind giving me a hand? I'm really stumped here.

>>10
I got it from php.net.

I would suppose they know about PHP or something. =/

>>9
I really don't get what you mean.

And PHP is one of the first things they taught me. I know Scheme, but it's a skill that hasn't seen much use ever since that class.