From: Marcus Boerger <helly@php.net>
Date: Thu, 15 Sep 2005 03:48:38 +0000 (+0000)
Subject: - MFB
X-Git-Tag: RELEASE_0_9_0~211
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=849fb0720173952874af8214da6f01a3e73875d0;p=php

- MFB
---

diff --git a/ext/spl/examples/recursivearrayiterator.inc b/ext/spl/examples/recursivearrayiterator.inc
new file mode 100755
index 0000000000..305e54cad9
--- /dev/null
+++ b/ext/spl/examples/recursivearrayiterator.inc
@@ -0,0 +1,55 @@
+<?php
+
+/** @file recursivearrayiterator.inc
+ * @ingroup Examples
+ * @brief class RecursiveArrayIterator
+ * @author  Marcus Boerger
+ * @date    2003 - 2005
+ *
+ * SPL - Standard PHP Library
+ */
+
+/** @ingroup Examples
+ * @brief   A recursive array iterator
+ * @author  Marcus Boerger
+ * @version 1.0
+ * @since PHP 6.0
+ *
+ * Passes the RecursiveIterator interface to the inner Iterator and provides
+ * the same functionality as FilterIterator. This allows you to skip parents
+ * and all their childs before loading them all. You need to care about
+ * function getChildren() because it may not always suit your needs. The 
+ * builtin behavior uses reflection to return a new instance of the exact same
+ * class it is called from. That is you extend RecursiveFilterIterator and
+ * getChildren() will create instance of that class. The problem is that doing
+ * this does not transport any state or control information of your accept()
+ * implementation to the new instance. To overcome this problem you might 
+ * need to overwrite getChildren(), call this implementation and pass the
+ * control vaules manually.
+ */
+class RecursiveArrayIterator extends ArrayIterator implements RecursiveIterator
+{
+	/** @return whether the current element has children
+	 */
+	function hasChildren()
+	{
+		return is_array($this->current());
+	}
+
+	/** @return an iterator for the current elements children
+	 *
+	 * @note the returned iterator will be of the same class as $this
+	 */
+	function getChildren()
+	{
+		if (empty($this->ref))
+		{
+			$this->ref = new ReflectionClass($this);
+		}
+		return $this->ref->newInstance($this->current());
+	}
+	
+	private $ref;
+}
+
+?>
\ No newline at end of file