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Array_map.php

Code
<?php
$numbers = [0, 1, 2, 3, 4, 5];
$newNumbers = array_map(fn($number) => $number * 2, $numbers);

echo '<pre>';
print_r($newNumbers);
echo '</pre>';
?>
Output
Array
(
    [0] => 0
    [1] => 2
    [2] => 4
    [3] => 6
    [4] => 8
    [5] => 10
)