Extracting data from a string
My Thoughts

I haven't profiled any of these, but I'm going to assume speed is not a priority.

I like #2 the best.  It is clean and simple, and easy to understand what the code is doing at a glance.

I think #1 is ugly, and the sequential array slicing makes me nervous and seems easy to break.  If your number sizes change at some point in the future, this one would be the hardest to modify.

I think #3 is better, but not as clear or concise as #2.