That code is working fine. You just make an error in the way you check the returned values.

@newtest = days($test);

foreach $num (@newtest) {
print "$newtest[$num]\n";
}
[download]

The array, @newtest, is assigned ('Tuesday', 'Wednesday') as expected but you iterate over it and use each element as an index back into @newtest. You are printing $newtest['Tuesday'] and $newtest['Wednesday'] but both 'Tuesday' and 'Wednesday' evaluate to 0 in numerical context. So, You print $newtest[0] twice and $newtest[0] holds 'Tuesday'. That's why you print 'Tuesday' twice.

Try writing that loop as:

foreach $day (@newtest) { 
    print $day,"\n"; 
}
[download]

-sauoq
"My two cents aren't worth a dime.";