Require inner iterator to be RecursiveIterator

diff --git a/ext/spl/examples/parentiterator.inc b/ext/spl/examples/parentiterator.inc
index 74299eeb2fadba97dcc07a1eba84a9610b7adb7f..4b758132ac88816795c677c689e7517c7e0f0159 100644 (file)
--- a/ext/spl/examples/parentiterator.inc
+++ b/ext/spl/examples/parentiterator.inc
@@ -2,6 +2,10 @@
 
 class ParentIterator extends FilterIterator implements RecursiveIterator
 {
+       function __construct(RecursiveIterator $it)
+       {
+               parent::__construct($it);
+       }
        function accept()
        {
                return $this->it->hasChildren();