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function is not described

_reset_front_page_settings_for_post() WP 3.7.0

Reset the page_on_front, show_on_front, and page_for_post settings when a linked page is deleted or trashed.

Also ensures the post is no longer sticky.

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

No Hooks.

Return

null. Null. Nothing.

Usage

_reset_front_page_settings_for_post( $post_id );
$post_id(int) (required)
Post ID.

Changelog

Since 3.7.0 Introduced.

Code of _reset_front_page_settings_for_post() WP 5.7

<?php
function _reset_front_page_settings_for_post( $post_id ) {
	$post = get_post( $post_id );

	if ( 'page' === $post->post_type ) {
		/*
		 * If the page is defined in option page_on_front or post_for_posts,
		 * adjust the corresponding options.
		 */
		if ( get_option( 'page_on_front' ) == $post->ID ) {
			update_option( 'show_on_front', 'posts' );
			update_option( 'page_on_front', 0 );
		}
		if ( get_option( 'page_for_posts' ) == $post->ID ) {
			update_option( 'page_for_posts', 0 );
		}
	}

	unstick_post( $post->ID );
}