My source data array is actually more like:

Item1 - 2 foo, 2 bar
argle
bargle
Item2 - 0 foo, 1 bar
floogle
Item3 - 1 foo, 3 bar
Item4 - 1 foo, 2 bar
choogle
[download]

I used the regex in the foreach to remove everything that causes the "uninitialized" and "isn't numeric" messages.

But I still seem to need the regex in the sprintf statement, to make the sort come out right.