ce_immutable     1975 ext/date/php_date.c 	zend_class_entry ce_date, ce_immutable, ce_timezone, ce_interval, ce_period, ce_interface;
ce_immutable     2009 ext/date/php_date.c 	INIT_CLASS_ENTRY(ce_immutable, "DateTimeImmutable", date_funcs_immutable);
ce_immutable     2010 ext/date/php_date.c 	ce_immutable.create_object = date_object_new_date;
ce_immutable     2011 ext/date/php_date.c 	date_ce_immutable = zend_register_internal_class_ex(&ce_immutable, NULL);