err_string        692 ext/xmlwriter/php_xmlwriter.c static void php_xmlwriter_string_arg(INTERNAL_FUNCTION_PARAMETERS, xmlwriter_read_one_char_t internal_function, char *err_string)
err_string        717 ext/xmlwriter/php_xmlwriter.c 	if (err_string != NULL) {
err_string        718 ext/xmlwriter/php_xmlwriter.c 		XMLW_NAME_CHK(err_string);