This one is nice too. You can make your vars in the form like this:
<input type=text name=user[0]>
<input type=text name=user[1]>
...
<input type=text name=user[99]>
And then all the text fields name user[xx] will be an array to the phpscript, i.e.
print $user[5] would get you the 6th name in our form above