WordPress at a glance
function is not described

get_current_site_name() WP 3.0.0

Deprecated in 3.9.0. It is no longer supported and can be removed in future releases. Use get_current_site() instead.

This deprecated function formerly set the site_name property of the $current_site object.

This function simply returns the object, as before. The bootstrap takes care of setting site_name.

No Hooks.

Return

Object.

Usage

get_current_site_name( $current_site );
$current_site(object) (required)

Code of get current site name: wp-includes/ms-load.php VER 5.0.3

<?php
function get_current_site_name( $current_site ) {
	_deprecated_function( __FUNCTION__, '3.9.0', 'get_current_site()' );
	return $current_site;
}