PHP / Javascript menu list population

Hello Folks,

I would like a web page to have 2 menu lists

The contents of the second menu list depending on the selection made in
the first.

The contents of the second would be populated from a database.

I am fairly new to programming using PHP, Javascript and MySQL but I am
sure what I am asking has been done before. Could someone please give
me some pointers or direct me to a tutorial.

Cheers
Darren

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