code: public static function call($callable /*, ...$parameters */)
      {
          try {
              self::suppress();
              $result = call_user_func_array($callable, array_slice(func_get_args(), 1));
              self::restore();
  
              return $result;
          } catch (\Exception $e) {
              // Use a finally block for this when requirements are raised to PHP 5.5
              self::restore();
              throw $e;
          }
      }
docs: Calls a specified function while silencing warnings and below.
  
  Future improvement: when PHP requirements are raised add Callable type hint (5.4) and variadic parameters (5.6)
  
  @param  callable   $callable Function to execute.
  @throws \Exception Any exceptions from the callback are rethrown.
  @return mixed      Return value of the callback.