CSV to associative arrays

Hi all,

Kind of a PHP newbie and was wondering if anyone could provide some
guidance. I have 2 CSV files with 2 columns each and want to find the
intersection of both based on the value in the first column. For
example

File 1

id1, apple
id2, orange
id3, banana
id4, durian
id5, tomato

File 2

id7, coke
id6, drpepper
id5, sprite
id4, 7up
id1, water

My desired output is:

id1, apple, water
id4, durian, 7up
id5, tomato, sprite

I've been trying to create some PHP scripts to do that, using merge,
usort, array_intersect. I think my main problem is that when use
fgetcsv, I'm creating multi-dimensional arrays.

I *think* what I should be doing is creating single dimension arrays
with IDs as keys, and the fruit/drink as values. Then I should be able
to use array_intersect_assoc to compare the keys from each list and
match IDs.

However, I don't know how to go from id1, apple to array(id1 =>
apple). Anyone know how I can read the CSV files in this way? Am i on
the right track?

Thanks!