date_object_new_interval_ex 2373 ext/date/php_date.c 	return date_object_new_interval_ex(class_type, NULL TSRMLS_CC);
date_object_new_interval_ex 2380 ext/date/php_date.c 	zend_object_value new_ov = date_object_new_interval_ex(old_obj->std.ce, &new_obj TSRMLS_CC);