redirect snippet

gistfile1.txt

/*
Redirect Postname permalinks to a custom permalink structured url in Wordpress

# How it works
It would check your post slug in Request url and would redirect all your Postname permalinks to
the blog's updated permalinks with Response 301 code. If you have changed your permalink
structure for your posts to something like:

🔗 Old permalink structure 
/%postname%/

✨ New permalink Structure 
/blog/%postname%/

✅ All REQUEST_URI to /%postname%/ will redirect to /blog/%postname%/

🤓 This might not be the best way to solve this issue but I hope you all may help me to improve.

# How to use
Simply copy and paste this code in your child theme's functions file to test it.
*/

function rudr_post_permalink( $url ){
$request_uri = urldecode($_SERVER['REQUEST_URI']);
$the_slug = "/$request_uri/";
$args = array(
  'name'        => $the_slug,
  'post_type'   => 'post',
  'post_status' => 'publish',
  'numberposts' => 1
);
$my_posts = get_posts($args);
if( $my_posts ) :
  $post_url = get_post_permalink($my_posts[0]->ID);
  wp_redirect($post_url, 301);
  die();
endif;

}

add_filter( 'template_redirect', 'rudr_post_permalink');