my_function_call(
                 my_other_function_call(
                                        $arg1,
                                        $arg2,
                                        and_yet_one_more_function_call(
                                                                       $arg1,
                                                                       $arg2,
                                                                       $arg3,
                                                                      ),
                                       ),
                 $arg2,
                 $arg3,
                );