acf_is_multisite_main_site() │ ACF 6.2.4

Detect if we're on a multisite main site.

No Hooks.

Returns

true|false. true if we're in a multisite install and on the main site

Usage

acf_is_multisite_main_site();

Changelog

Since 6.2.4 Introduced.

acf_is_multisite_main_site() code ACF 6.8.8

acf/includes/api/api-helpers.php 
function acf_is_multisite_main_site() {
	if ( is_multisite() && is_main_site() ) {
		return true;
	}
	return false;
}