PHP - array_map

Trieda

Koreň \ Bez triedy

Metóda - array_map

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

Applies a callback (function) to all elements in an array.

Procedurálne

• function array_map (callable $callback, array $array1, array $...) : array

Parametre

Názov	Dátový typ	Predvolená hodnota	Popis
$callback	callable		A callback function (i.e. the name of the function). The function should have as many parameters as the number of arrays in array_map() we pass.
$array1	array		An array to modify by the callback function.
$...	array		More arrays to modify by the callback function.

Mávratovej hodnoty

Vracia: array

An array containing elements from the original array after applying the callback function.

Príklady

<?php

function double($a)
{
        return 2 * $a;
}

$array = [1, 2, 3, 4];
$array = array_map('double', $array);

print_r($array);