array_all
PHP function
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(PHP 8 >= 8.4.0)
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
arrayThe Array that should be searched.
callbackThe callback function to call to check each element, which must be of the following signature:
callback(mixed $value, mixed $key): boolIf 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
array_all() example
php
<?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:
output
bool(true)
bool(false)
bool(true)