DATE_FORMAT_RFC1036  848 ext/date/php_date.c 	REGISTER_STRING_CONSTANT("DATE_RFC1036", DATE_FORMAT_RFC1036, CONST_CS | CONST_PERSISTENT);
DATE_FORMAT_RFC1036 2040 ext/date/php_date.c 	REGISTER_DATE_CLASS_CONST_STRING("RFC1036", DATE_FORMAT_RFC1036);