diff --git a/tests/func/006.phpt b/tests/func/006.phpt
new file mode 100644
index 00000000000..85a435be3cc
--- /dev/null
+++ b/tests/func/006.phpt
@@ -0,0 +1,21 @@
+--TEST--
+Output buffering tests
+--POST--
+--GET--
+--FILE--
+<?php
+ob_start();
+echo ob_get_level();
+echo 'A';
+  ob_start();
+  echo ob_get_level();
+  echo 'B';
+  $b = ob_get_contents();
+  ob_end_clean();
+$a = ob_get_contents();
+ob_end_clean();
+echo $b;
+echo $a;
+?>
+--EXPECT--
+3B2A