class_uses
(No version information available, might only be in SVN)
class_uses — Return the traits used by the given class
说明
array class_uses ( mixed $class [, bool $autoload = true ] )This function returns an array with the names of the traits that the given class uses. This does however not include any traits used by a parent class.
参数
- class
-
An object (class instance) or a string (class name).
- autoload
-
Whether to allow this function to load the class automatically through the __autoload magic method.
返回值
An array on success, or FALSE on error.
范例
Example #1 class_implements() example 以上例程的输出类似于：
<?php
trait foo { }
class bar {
use foo;
}
print_r(class_uses(new bar));
print_r(class_uses('bar'));
function __autoload($class_name) {
require_once $class_name . '.php';
}
// use __autoload to load the 'not_loaded' class
print_r(class_implements('not_loaded', true));
Array
(
[foo] => foo
)
Array
(
[foo] => foo
)
Array
(
[trait_of_not_loaded] => trait_of_not_loaded
)
参见
- class_parents() - 返回指定类的父类。
- get_declared_traits()
