diff --git a/ext/date/tests/bug33563.phpt b/ext/date/tests/bug33563.phpt
new file mode 100644
index 00000000000..b9300372871
--- /dev/null
+++ b/ext/date/tests/bug33563.phpt
@@ -0,0 +1,12 @@
+--TEST--
+Bug #33563 (strtotime('+1 month',$abc) cant get right time)
+--FILE--
+<?php
+date_timezone_set("GMT");
+$strCurrDate = date('Y-m-d H:i:s',strtotime('2005-06-30 21:04:23'));
+$strMonAfter = date('Y-m-d H:i:s',strtotime('+1 month',strtotime($strCurrDate)));
+
+echo "strCurrDate:$strCurrDate strMonAfter:$strMonAfter";
+?>
+--EXPECT--
+strCurrDate:2005-06-30 21:04:23 strMonAfter:2005-07-30 21:04:23