wp-regenerate-slug.php

wp-regenerate-slug.php

<?php
$posts = get_posts(array(
  'post_type' => 'page',
  'post_status' => 'publish',
  'orderby' => 'menu_order',
  'numberposts' => 999999
));

foreach ( $posts as $post )
{

  $new_slug = sanitize_title( $post->post_title );
  if ( $post->post_name != $new_slug )
  {
    wp_update_post(
    array (
    'ID'        => $post->ID,
    'post_name' => $new_slug
    )
  );
}
}