(PHP 8 >= 8.4.0)
array_all — Checks if all array elements satisfy a callback function
Descriptionarray_all() returns true, if the given callback returns true for all elements. Otherwise the function returns false.
array
callback
The callback function to call to check each element, which must be
If this function returnsfalse, false is returned from array_all() and the callback will not be called for further elements.
The function returns true, if callback returns true for all elements. Otherwise the function returns false.
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)See Also
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;
}
}
1 month ago
The function will always return true for empty array.
php > var_dump(array_all([], fn()=> true));
bool(true)
php > var_dump(array_all([], fn()=> false));
bool(true)
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