While I was working on a WordPress template today, I needed to find the current page’s post_slug. After investigating the function is_single in wp-includes/query.php, I discovered the following method for determining the current page ID, post title, or post name:
$post_obj = $wp_query->get_queried_object();
$post_ID = $post_obj->ID;
$post_title = $post_obj->post_title;
$post_name = $post_obj->post_name;

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