配列返す関数で値をうけとるとき

1.pl

#!/usr/bin/perl
use strict;
use warnings;

my ( $a, $b ) = unko();
print "$a\n";
print "$b\n";

sub unko {
  return ( 'aaa', 'bbb' );
}

2.php

<?php
$result = unko();
$a = $result[0];
$b = $result[1];
print "{$a}\n";
print "{$b}\n";

function unko() {
  return array( 'aaa', 'bbb' );
}

3.js

var result = unko();
var a = result[0];
var b = result[1];
console.log(a);
console.log(b);

function unko() {
  return [ 'aaa', 'bbb' ];
}