forward_static_call.php

<?php

class Beer {
    const NAME = 'Beer!';
    public static function printed(){
        echo 'static Beer:NAME = '. static::NAME . '<br />';
    }
}

class Ale extends Beer {
    const NAME = 'Ale!';
    public static function printed(){
        forward_static_call(array('parent','printed'));
        call_user_func(array('parent','printed'));

        forward_static_call(array('Beer','printed'));
        call_user_func(array('Beer','printed'));
    }
}

Ale::printed();
echo '</pre>';

// Outputs:
// static Beer:NAME = Ale!
// static Beer:NAME = Ale!
// static Beer:NAME = Ale!
// static Beer:NAME = Beer!