Displaying the first child page of the parent page

Question

Rooms
  Rooms 1
  Rooms 2
  Rooms 3
  Rooms 4

Rooms is the parent page and I want to display only the first child page.

Currently, I am using the code:

<?php
$args = array(
    'child_of' => 4,
    'title_li' => '',
    'sort_column' => 'post_date'
 );

 $pages = wp_list_pages($args);

It is fetching all the child pages. I am new to Wordpress coding and so need help.

Answer 1

You can use get_pages with a limit of 1:

$pages = get_pages([
    'child_of' => $post->post_parent,
    'number'   => 1,
]);

if ( $pages ) {
    $first_page = current( $pages );
}