获取三个特定的wordpress帖子并随机输出

Question

I've this wordpress get_posts arguments:

    $arg = array(
        'orderby' => 'rand',
        'numberposts' => 1,
        'post_type' => 'dmd_berater',
        'post_name' => 'test1',
        'meta_query' => array(
            'key' => 'dmd_subject',
            'value' => 'Daten und Analysen',
            'compare' => 'LIKE'
        ),
    );
    $consultant_post = get_posts($arg); //contains ALL posts.

The code above contains all posts but I only want the post with the post_name 'test1'.

Is this possible? And how?

It should be great if I can output three specific posts. I think it should be work with an array? Like:

'post_name' => array('test1', 'test2', 'test3'),

1. Can somebody find my issue?
2. Is an array possible?

Answer 1

'post_name__in' => array('test1', 'test2', 'test3')

See the paramters section for more informations.