- var_dump: documentation ( source)
- array_merge: documentation ( source)
<?php
$poop = array();
$arr[23] = "poop";
$arr[24] = "fart";
$result = array_merge($poop,$arr);
var_dump($result);
$somethingElse = $poop + $arr;
var_dump($somethingElse);
$poop[2] = "what";
$poop[4] = "whatever!!";
$again = $poop + $arr;
var_dump($again);