I'm helping a friend of mine build a matchmaking website, and we have a
doozy of a problem to solve:

What I need to do is two fold:

#1 Collect whatever geographical information I need from each user to enable
#2
#2 Be able to run query's to find people NEAR (geographically) another
person.

Does anyone know of any commercial or free implementations of this? Is it
primarily a database problem or is their some way (computationally) to
compute the probable proximity of two zip codes?

Hopefully someone responds to this with a Pear package that does exactly
what I need! :) If that can't happen, then I'd appreciate any options you
can think of.

td

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