Array elemtns callback function

<?php

function cube($n)
{
    return($n.="Hola");
}

$a = array(1, 2, 3, 4, 5);
$b = array_map("cube", $a);
print_r($b);

?>

Examples ¶

Example #1 array_map() example

<?phpfunction cube($n)
{
    return($n * $n * $n);
}
$a = array(1, 2, 3, 4, 5);$b = array_map("cube", $a);print_r($b);?>

This makes $b have:

Array
(
    [0] => 1
    [1] => 8
    [2] => 27
    [3] => 64
    [4] => 125
)

Example #2 array_map() using a lambda function (as of PHP 5.3.0)

<?php
$func = function($value) {
    return $value * 2;
};
print_r(array_map($func, range(1, 5)));?>

Array
(
    [0] => 2
    [1] => 4
    [2] => 6
    [3] => 8
    [4] => 10
)