--- /dev/null
+--TEST--
+tzname
+--INI--
+psi.directory={PWD}/../../psi.d:{PWD}
+date.timezone=CET
+--SKIPIF--
+<?php
+extension_loaded("psi") or die("skip - need ext/psi");
+?>
+--FILE--
+===TEST===
+<?php
+var_dump(psi\tzset(), psi\tzname());
+?>
+===DONE===
+--EXPECTF--
+===TEST===
+NULL
+array(2) {
+ [0]=>
+ string(3) "CET"
+ [1]=>
+ string(4) "CEST"
+}
+===DONE===