PHP_DATE_TIMEZONE_GROUP_ARCTIC 1922 date/php_date.c 	REGISTER_TIMEZONE_CLASS_CONST_STRING("ARCTIC",      PHP_DATE_TIMEZONE_GROUP_ARCTIC);
PHP_DATE_TIMEZONE_GROUP_ARCTIC 3876 date/php_date.c 	if (what & PHP_DATE_TIMEZONE_GROUP_ARCTIC     && strncasecmp(id, "Arctic/",      7) == 0) return 1;