php onchange

Hello, I'm pretty new in php and I hope you guys can help me.
I have a form, and the form has several select-option items. When I choose some option at first select I'd like contents in the following select changed. (I take datas from db, and it depens on what the user will choose...).
Thx.

Of course it's possible one of us can help you; I'm sure there's at least a few of us who know how to create a form. But the DirectAdmin Forums are for discussing issues with DirectAdmin and not with general webmaster questions, so you'll probably be better off finding a different forum to ask your question.

In any event, your question has nothing to do with running MySQL or PHP in a server environment; so I've moved your thread; here it's most definitely off-topic.

Jeff