@aray = (
    '1, 2, 5, 1, 2, 5, 1, 2, 5',
    '3, 6, 3, 6, 3, 6, 3, 6',
    '4, 1, 28, 0, 4, 1, 28, 0',
    '3, 5, 17, 3, 17, 5',
    '4, 1, 28, 0, 4, 1, 28',
);

for ($i = 0; $i < @aray; $i++) {
    if ($aray[$i] eq '1, 2, 5, 1, 2, 5, 1, 2, 5') { print 3 }
    if ($aray[$i] eq '3, 6, 3, 6, 3, 6, 3, 6') { print 4 }
    if ($aray[$i] eq '4, 1, 28, 0, 4, 1, 28, 0') { print 2 }
    if ($aray[$i] eq '3, 5, 17, 3, 17, 5') { print 0 }
    if ($aray[$i] eq '4, 1, 28, 0, 4, 1, 28') { print 0 }
}