in reply to I can't figure out what's wrong with this foreach loop

Call your function after you initialize the array: 
@test =     (
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ],
            );

displayBoard( );

[download]

In Section Seekers of Perl Wisdom