class_uses
(PHP 5 >= 5.4.0, PHP 7, PHP 8)
class_uses — Return the traits used by the given class
Beschreibung
$object_or_class
, bool $autoload
= true
): array|false
This function returns an array with the names of the traits that the
given object_or_class
uses. This does however not include
any traits used by a parent class.
Parameter-Liste
-
object_or_class
-
An object (class instance) or a string (class name).
-
autoload
-
Whether to call __autoload by default.
Rückgabewerte
An array on success, or false
when the given class doesn't exist.
Beispiele
Beispiel #1 class_uses() example
<?php
trait foo { }
class bar {
use foo;
}
print_r(class_uses(new bar));
print_r(class_uses('bar'));
spl_autoload_register();
// use autoloading to load the 'not_loaded' class
print_r(class_uses('not_loaded', true));
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Array ( [foo] => foo ) Array ( [foo] => foo ) Array ( [trait_of_not_loaded] => trait_of_not_loaded )
Siehe auch
- class_parents() - Return the parent classes of the given class
- get_declared_traits() - Returns an array of all declared traits