Generate random player strengths in a pyramid structure (PHP)

Question

For an online game (MMORPG) I want to create characters (players) with random strength values. The stronger the characters are, the less should exist of this sort.

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Answer 1

something like this

Band 1 being the strongest, band 4 being the weakest.

Ofcourse this is basic, you would want to refactor this to use loops instead of hardcoded switches, but you get the idea :)