1 files changed, 92 insertions, 0 deletions
diff --git a/framework/web/CHttpSessionIterator.php b/framework/web/CHttpSessionIterator.php
new file mode 100644
index 0000000..f695c46
--- /dev/null
+++ b/framework/web/CHttpSessionIterator.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * CHttpSessionIterator class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CHttpSessionIterator implements an interator for {@link CHttpSession}.
+ *
+ * It allows CHttpSession to return a new iterator for traversing the session variables.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: CHttpSessionIterator.php 2799 2011-01-01 19:31:13Z qiang.xue $
+ * @package system.web
+ * @since 1.0
+ */
+class CHttpSessionIterator implements Iterator
+{
+	/**
+	 * @var array list of keys in the map
+	 */
+	private $_keys;
+	/**
+	 * @var mixed current key
+	 */
+	private $_key;
+
+	/**
+	 * Constructor.
+	 * @param array the data to be iterated through
+	 */
+	public function __construct()
+	{
+		$this->_keys=array_keys($_SESSION);
+	}
+
+	/**
+	 * Rewinds internal array pointer.
+	 * This method is required by the interface Iterator.
+	 */
+	public function rewind()
+	{
+		$this->_key=reset($this->_keys);
+	}
+
+	/**
+	 * Returns the key of the current array element.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the key of the current array element
+	 */
+	public function key()
+	{
+		return $this->_key;
+	}
+
+	/**
+	 * Returns the current array element.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the current array element
+	 */
+	public function current()
+	{
+		return isset($_SESSION[$this->_key])?$_SESSION[$this->_key]:null;
+	}
+
+	/**
+	 * Moves the internal pointer to the next array element.
+	 * This method is required by the interface Iterator.
+	 */
+	public function next()
+	{
+		do
+		{
+			$this->_key=next($this->_keys);
+		}
+		while(!isset($_SESSION[$this->_key]) && $this->_key!==false);
+	}
+
+	/**
+	 * Returns whether there is an element at current position.
+	 * This method is required by the interface Iterator.
+	 * @return boolean
+	 */
+	public function valid()
+	{
+		return $this->_key!==false;
+	}
+}