The class_uses Function

The class_uses function returns an array with the names of traits used by the specified class or object. The function takes one mandatory parameter - a class or object, and one optional parameter that determines whether to include traits from parent classes.

Syntax

phpclass_uses(object|string $class, bool $autoload = true): array

Example

Let's create several traits and a class that uses them:

php<?php
  trait TraitA {
    public function methodA() {}
  }
  
  trait TraitB {
    public function methodB() {}
  }
  
  class MyClass {
    use TraitA, TraitB;
  }
  
  $res = class_uses('MyClass');
  print_r($res);
?>

Code execution result:

php[
  'TraitA' => 'TraitA',
  'TraitB' => 'TraitB'
]

Example

Let's check traits for an object:

php<?php
  $obj = new MyClass();
  $res = class_uses($obj);
  print_r($res);
?>

Code execution result:

php[
  'TraitA' => 'TraitA',
  'TraitB' => 'TraitB'
]

Example

Working with inheritance:

php<?php
  class ParentClass {
    use TraitA;
  }
  
  class ChildClass extends ParentClass {
    use TraitB;
  }
  
  $res = class_uses('ChildClass');
  print_r($res);
?>

Code execution result:

php[
  'TraitB' => 'TraitB'
]

See Also