"As you can see $a is a string "PV", while $b is an int "IV", even thought it was never used in an numeric context."

If you mean what I think you mean -- that $b is an int BECAUSE it was never used in a numeric content -- I think you're wrong, morgon: $b IS an IV, because it was instantiated that way... as an integer, without quotes that would have made it a string.

Update: Maybe I have the code tags right... at last.

In reply to Re^4: Numification of strings by ww
in thread Numification of strings by LanX

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