Need help regarding wordpress functions.php code which is used for redirections

Question

I would highly appreciate it if you could help me with inserting the redirection code. I am using the following script to redirect the old website to the new one on the same post path. I insert that script in Wordpress functions.php and the script works perfectly in redirecting.

I want that script to be executed after 5 seconds delay.. i mean the visitor while reading the post redirects to the same post on another website after 5 seconds, I meant to say the user stay on the same post page for 5 seconds before redirecting to the other website's same post.

EXAMPLE: www.MyWebSite.com/Post123 visitor stay on the /Post123 for 5 seconds and then redirects to www.OtherWebSite.com/Post123

please help .. following is the code. I would highly appreciate it if you could do me a favor by responding on my question by modifying the code I have given below so I can copy and paste it into wordpress editor functions.php.. Thanks a lot.

 function redirect_posts() {
    global $post;
    if ($post->post_type=='post') {
        return header('location:https://www.MYWEBSITE.com/'.$post->post_name);
    }
}
add_action('wp', 'redirect_posts');

Answer 1

I read your question and i suggested can you use Redirection plugin.

This plugin is used for 301 redirects and many conditional causes.

You can read plugin documentation for here