PHP 8 reference · Array Functions

PHP array_all() Function

Return true if every element passes a callback test, stopping at the first failure. Added in PHP 8.4.

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Syntax

array_all(array $array, callable $callback): bool

Parameter	Description
`array`	The input array.
`callback`	`fn($value, $key)` returns `true` if the element passes.

true if all elements pass.

Are all adults?

<?php
$ages = [21, 34, 19];
var_dump(array_all($ages, fn($age) => $age >= 18));

Output

bool(true)

Run this on your computer — see “Get Started” for setup.

Empty arrays

<?php
var_dump(array_all([], fn($v) => false)); // empty: true

Output

bool(true)

Run this on your computer — see “Get Started” for setup.

Version	Change
PHP 8.4	Added

array_any() · Return true if at least one element passes a callback test, stopping at the first match. Added in PHP 8.4.
array_filter() · Keep only the elements for which a callback returns true. Without a callback it removes empty values; keys are kept.
PHP Array Functions · tutorial
PHP Arrays · tutorial