traits, magic methods and inheritance

gistfile1.php

<?php

trait Methods
{
    public function __call($name, $args)
    {
        if (property_exists($this, $name)) {
            return $this->$name;
        }

        if (($parent = get_parent_class(__CLASS__)) && method_exists($parent, '__call')) {
            return parent::__call($name, $args);
        }

        throw new RuntimeException("Computer says no.");
    }
}

class Person
{
    use Methods;

    private $pPrivate = 'pPrivate';
    protected $pProtected = 'pProtected';
    public $pPublic = 'pPublic';
}

class Salesman extends Person
{
    use Methods;

    private $sPrivate = 'sPrivate';
    protected $sProtected = 'sProtected';
    public $sPublic = 'sPublic';
}

class Zombie
{
    private $zPrivate = 'zPrivate';
    protected $zProtected = 'zProtected';
    public $zPublic = 'zPublic';
}

class Walker extends Zombie
{
    use Methods;
}

$dude = new Salesman();

//inheritance
var_dump($dude->sPublic());
var_dump($dude->sProtected());
var_dump($dude->sPrivate());
var_dump($dude->pPublic());
var_dump($dude->pProtected());
var_dump($dude->pPrivate());

//no inherited trait
$zombie = new Walker();
var_dump($zombie->zPublic());
var_dump($zombie->zProtected());

//should be exception
var_dump($zombie->zPrivate());