is_plugin_active_for_network() WordPress Function

The is_plugin_active_for_network() function determines whether a plugin is active for the entire network. This is useful for plugin authors who need to know whether their plugin is active on a multisite installation. By default, the is_plugin_active() function only checks if a plugin is active on the current site.

is_plugin_active_for_network( string $plugin ) #

function is_plugin_active_for_network( $plugin ) {
	if ( ! is_multisite() ) {
		return false;
	}

	$plugins = get_site_option( 'active_sitewide_plugins' );
	if ( isset( $plugins[ $plugin ] ) ) {
		return true;
	}

	return false;
}