I'm using PHP 4.04pl1 on a linux box.

Whenever I use the array_sum function on an array 
containing both string and numeric values, it does the sum 
of the numeric values properly, but turns all non-number  
values in the array into the value "0" (zero).

I tried creating a function that copied the array into 
another variable so that it would not be operating on the 
original... but mysteriously, it still destroyed the string 
values in the _original_ array!

I don't have access to upgrade to a newer version of PHP... 
but if I were able to convince someone to upgrade, would 
that particular problem be fixed?