When you declare my $black_player at the start of the sub .That variable is global through the scope of the sub .
(My or our would behave the same with respect to this sub,behaviour would vary with respect to code followinng down the line).
When you do a foreach $black_player (@possible_opponents)
This effectively overrides the above $black_player .It is local to the loop.Same principle as a pass by value in C.
Therefore ,you can rename your looping variable or just do what roger has done ,use $_.

In reply to Re: Question regarding variable scope by chimni
in thread Question regarding variable scope by jpfarmer

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