WP 4.0 Mehrere Admins Benachrichtigung, dass Kommentare eingegangen sind

function comment_notifications($comment_id) {
    $comment = get_comment($comment_id);
    $post_id = $comment->comment_post_ID;
    $post = get_post($post_id);
    $title = $post->post_title;


    $subject = "Neuer Kommentar zu: " . $title;


    $comment_autor = $comment->comment_author;
    $message = $comment->comment_content;
    $comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
    $comment_author_url = get_comment_author_url($comment_id);
    $comment_author_mail = get_comment_author_email($comment_id);
    $comment_ip = $comment->comment_author_IP;
    $commentlink = get_comment_link($comment_id);
    $url = get_edit_comment_link($comment_id);


    $text = "Neuer Kommentar zu: " . $title . "\n \n";
    $text .= "Autor: " . $comment_autor . " (IP: " . $comment_ip . " , " . $comment_author_domain . ") \n";
    $text .= "E-Mail: " . $comment_author_mail . "\n";
    $text .= "URL: " . $comment_author_url . "\n";
    $text .= "Whois: http://whois.arin.net/rest/ip/" . $comment_ip . "\n \n";
    $text .= "Kommentar: \n" . $message . "\n \n";
    $text .= "Du kannst alle Kommentare zu diesem Beitrag hier sehen: " . get_permalink($post_id) . "#comments \n \n";
    $text .= "Permalink: " . $commentlink . "\n";
    $text .= "Edit: " . admin_url('comment.php?action=editcomment&c=') . $comment->comment_ID;


    $site_name = get_bloginfo('name');
    $charset = get_settings('blog_charset');
    $to = array(
    'recipient1@example.com',
    'recipient2@example.com',
    'recipient3@example.com'
    );
    $headers = "From: $site_name <$to>\n";
    $headers .= "MIME-Version: 1.0\n";
    $headers .= "Content-Type: text/plain; charset=\"{$charset}\"\n";


    if ($comment->comment_approved == '1') {
      wp_mail( $to, $subject, $text, $headers );
    }
}
add_action('comment_post', 'comment_notifications');