Get post by Slug - Wordpress

gistfile1.php

function get_post_by_slug($post_name) {
  global $wpdb;
  $post = $wpdb->get_var($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_name = %s", $post_name));

  return $post ? get_post($post) : NULL;
  
}

\get_page_by_path( 'sulg', \OBJECT, 'post');