XML_ErrorString   137 ext/xml/expat_compat.h PHPAPI const XML_Char *XML_ErrorString(int);
XML_ErrorString  1449 ext/xml/xml.c  	str = (char *)XML_ErrorString((int)Z_LVAL_PP(code));
XML_ErrorString   720 ext/xmlrpc/libxmlrpc/xml_element.c          const char * error_str = XML_ErrorString(err_code);