Ticket #17111: test-do-action.php

<?php

add_action( 'test_action', 'var_dump', 10, 2 );

class Dummy {
        function __construct() {
                echo '<pre>';
                do_action( 'test_action', array( &$this ), 'foo' );

                do_action( 'test_action', array( 'key' => 'val' ), 'foo' );     
                echo '</pre>';
        }
}

new Dummy;