WordPress get child pages of the current page

How to get a list of child pages of the current page in the WordPress.Only you have to call to wordpress wp_list_pages core function to get child pages.No display errors and no need to write sql statements.

	ID; //current page ID
		$children = wp_list_pages('title_li=&child_of='.$currentPageID.'&echo=0');
		if ($children) { ?>
			 

Note:
Get parent page ID

  $post->post_parent;

Get Current page ID

  $post->ID;