Its easy to join two arrays at Perl to produce a new one. Just like other smaller tasks, for joining, you'll not require any function to aid you. Just a comma(,) can do the task for you.
$\ = $/;
my @array_one = (1, 3, 5, 7);
my @array_two = (2, 4, 6, 8);
my @new_array = (@array_one, @array_two);
print for @new_array;
This code will join the two arrays, and will print the new one. Joining is done using a comma. You can pass multiple arrays are separated with comma. Pretty easy.