+
+ switch (ZEND_NUM_ARGS()) {
+ case 1:
+ case 2:
+ isolation = conn_obj->intern->default_txn_isolation;
+ /* no break */
+ case 3:
+ readonly = conn_obj->intern->default_txn_readonly;
+ /* no break */
+ case 4:
+ deferrable = conn_obj->intern->default_txn_deferrable;
+ break;
+ }
+