How can you identify member variables of a class that come from traits in PHP?

When working with classes that use traits in PHP, it can be challenging to identify which member variables belong to the trait and which belong to the class itself. One way to solve this issue is by using the `get_class_vars()` function to retrieve an array of all the member variables of a class, including those from traits. By comparing this array to the list of member variables defined in the class, you can easily identify which variables come from traits.

class MyTrait {
    protected $traitVar = 'Trait Variable';
}

class MyClass {
    use MyTrait;

    protected $classVar = 'Class Variable';
}

$classVars = get_class_vars('MyClass');
$classDefinedVars = get_class_vars(get_class(new MyClass()));

$traitVars = array_diff_key($classVars, $classDefinedVars);

print_r($traitVars);