Holy Crap. I can't believe it.
Thanks....

I have written a database driven php program to keep up with inventory.
I added a field labeled 'box_num' into the existing database. Each entry has it's own id labeled 'id'. Each entry has one of two possible types, '20' or '30'.
My script runs two select queries, storing 'id' for each '20' entry in an array, and each '30' entry into a different array. I am then attempting to assign each entry a 'box_num' based upon its 'id' value....