PHP Manual»Функції для роботи з масивами»array_all

array_all

(PHP 8 >= 8.4.0)

array_all — Checks if all array elements satisfy a callback function

Опис

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

array_all() returns true, if the given callback returns true for all elements. Otherwise the function returns false.

Параметри

array

The array that should be searched.

callback

The callback function to call to check each element, which must be of the following signature:

function callback(mixed $value, mixed $key): bool

If this function returns false, false is returned from array_all() and the callback will not be called for further elements.

Значення, що повертаються

The function returns true, if callback returns true for all elements. Otherwise the function returns false.

Приклади

Приклад #1 array_all() example

<?php
$array = [
    'a' => 'dog',
    'b' => 'cat',
    'c' => 'cow',
    'd' => 'duck',
    'e' => 'goose',
    'f' => 'elephant'
];

// Check, if all animal names are shorter than 12 letters.
var_dump(array_all($array, function (string $value) {
    return strlen($value) < 12;
}));

// Check, if all animal names are longer than 5 letters.
var_dump(array_all($array, function (string $value) {
    return strlen($value) > 5;
}));

// Check, if all array keys are strings.
var_dump(array_all($array, function (string $value, $key) {
   return is_string($key);
}));
?>

Поданий вище приклад виведе:

bool(true)
bool(false)
bool(true)

Прогляньте також

array_any() - Checks if at least one array element satisfies a callback function
array_filter() - Filters elements of an array using a callback function
array_find() - Returns the first element satisfying a callback function
array_find_key() - Returns the key of the first element satisfying a callback function