Wordpress get the child pages of current page

Question

I want to display the child pages of the current page you are on.

<?php wp_list_pages('child_of=67&sort_column=menu_order&title_li=') ?>

If I give the id number like above it works perfectly like this:

However I want to use this as a template for multiple pages, but when I use the ID or get Id or echoing the ID, it also take the sibling pages of the parent page. Which I don't need.

<?php wp_list_pages('child_of=the_ID()&sort_column=menu_order&title_li=') ?>

I can't figure it out what I am doing wrong.

Answer 1

<?php 
$current_page_id = get_the_ID();
wp_list_pages("child_of={$current_page_id}&sort_column=menu_order&title_li="); ?>

Please check the above code