class_uses
(PHP 5 >= 5.4.0, PHP 7)
class_uses — Return the traits used by the given class
Description
class_uses ( mixed $class [, bool $autoload = true ] ) : array
This function returns an array with the names of the traits that the given class uses. This does however not include any traits used by a parent class.
Parameters
-
class -
An object (class instance) or a string (class name).
-
autoload -
Whether to allow this function to load the class automatically through the __autoload() magic method.
Return Values
An array on success, or false on error.
Examples
Example #1 class_uses() example
<?php
trait foo { }
class bar {
use foo;
}
print_r(class_uses(new bar));
print_r(class_uses('bar'));
function __autoload($class_name) {
require_once $class_name . '.php';
}
// use __autoload to load the 'not_loaded' class
print_r(class_uses('not_loaded', true));
?> The above example will output something similar to:
Array
(
[foo] => foo
)
Array
(
[foo] => foo
)
Array
(
[trait_of_not_loaded] => trait_of_not_loaded
)
See Also
- class_parents() - Return the parent classes of the given class
- get_declared_traits() - Returns an array of all declared traits
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.class-uses.php