Another test case

tests/lang/bug23922.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Bug #23922 (scope doesn't properly propagate into internal functions)
+--FILE--
+<?php
+  class foo
+  {
+    var $foo = 1;
+
+    function as_string()
+    { assert('$this->foo == 1'); }
+
+    function as_expr()
+    { assert($this->foo == 1); }
+  }
+
+  $foo = new foo();
+  $foo->as_expr();
+  $foo->as_string();
+?>
+--EXPECT--