php map array key as variable code example

Example 1: using array map php

array_map ( callable $callback , array $array1 [, array $... ] ) : array

Example 2: php map array

function cube($number)
{
    return ($number * $number * $number);
}

$nums = [1, 2, 3, 4, 5];
$cubed = array_map('cube', $nums);