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function is not described

_update_blog_date_on_post_delete() WP 3.4.0

Handler for updating the current site's last updated date when a published post is deleted.

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. Nothing.

Usage

_update_blog_date_on_post_delete( $post_id );
$post_id(int) (required)
Post ID

Changelog

Since 3.4.0 Introduced.

Code of _update_blog_date_on_post_delete() WP 5.7.2

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

	$post_type_obj = get_post_type_object( $post->post_type );
	if ( ! $post_type_obj || ! $post_type_obj->public ) {
		return;
	}

	if ( 'publish' !== $post->post_status ) {
		return;
	}

	wpmu_update_blogs_date();
}