*/ $lang['error'] = "ERROR:"; $lang['no_such_function'] = "there is no such function!"; $lang['not_enough_params'] = "not enough parameters were provided!"; $lang['empty_test_parameter'] = "test parameter cannot be empty!"; $lang['invalid_syntax'] = "invalid syntax!"; $lang['invalid_expression'] = 'expression contains invalid characters.'; $lang['undefined_result'] = 'indefinite or not numerical result.'; $lang['evaluation_error'] = 'error evaluating the expression.';