WordPress: Redirect to add new post on publish or save

redirect_post_location.php

<?php

add_filter('redirect_post_location', 'redirect_to_add_new_post_on_publish_or_save');

function redirect_to_add_new_post_on_publish_or_save(){
    if (isset($_POST['save']) || isset($_POST['publish'])) {
        $pl = get_admin_url('', 'post-new.php');
        if ($pl) {
            wp_redirect($pl);
        }
    }
}

function redirect_to_post_on_publish_or_save($location){
    if (isset($_POST['save']) || isset($_POST['publish'])) {
        if (preg_match("/post=([0-9]*)/", $location, $match)) {
            $pl = get_permalink($match[1]);
            if ($pl) {
                wp_redirect($pl);
            }
        }
    }
}