[PHP] apply function to each array element?

[raisinlove]

Hi, I'm looking for a concrete example I could use to create an array 
where each element from an original array is processed by a function.

It seems array_walk would be the solution but it doesnt seem to output 
an array.

My function looks up my array elements in a mysql table and outputs a 
corresponding row value. So I would like my new array to be made up of 
these values.

Can anyone help?

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