| @@ -361,8 +361,12 @@ | ||
| 361 | 361 | * |
| 362 | 362 | * @return bool |
| 363 | 363 | */ |
| 364 | 364 | public static function is_plugin_active( $plugin ): bool { |
| 365 | + if ( ! function_exists( 'is_plugin_active' ) ) { | |
| 366 | + require_once ABSPATH . 'wp-admin/includes/plugin.php'; | |
| 367 | + } | |
| 368 | + | |
| 365 | 369 | $plugin = self::ensure_plugin_folder( $plugin ); |
| 366 | 370 | return is_plugin_active( $plugin ); |
| 367 | 371 | } |
| 368 | 372 | |
