array_all

(PHP 8 >= 8.4.0)

array_all — Checks if all array elements satisfy a callback function

Description

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 .

Parameters

array

The array that should be searched.

callback

The callback function to call to check each element, which must be

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.

Return Values

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

Examples

Example #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);
}));
?>

The above example will output:

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

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User Contributed Notes 2 notes

down

Anonymous ¶

5 months ago

if (! function_exists('array_all')) {
 function array_all(array $array, callable $callable) {
 foreach ($array as $key => $value) {
 if (! $callable($value, $key))
 return false;
 }
 return true;
 }
}