is_plugin_active_for_network()WP 3.0.0

Determines whether the plugin is active for the entire network.

Only plugins installed in the plugins/ folder can be active.

Plugins in the mu-plugins/ folder can't be "activated," so this function will return false for those plugins.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

No Hooks.


true|false. True if active for the network, otherwise false.


is_plugin_active_for_network( $plugin );
$plugin(string) (required)
Path to the plugin file relative to the plugins directory.


Since 3.0.0 Introduced.

is_plugin_active_for_network() code WP 6.5.4

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;