WordPress at a glance
function is not described

_wp_footer_scripts() WP 3.3.0

Private, for use in *_footer_scripts hooks

No Hooks.

Return

Nothing (null).

Usage

_wp_footer_scripts();

Code of wp footer scripts: wp-includes/script-loader.php WP 5.2.2

<?php
function _wp_footer_scripts() {
	print_late_styles();
	print_footer_scripts();
}