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- <?php
- /**
- * @link http://www.yiiframework.com/
- * @copyright Copyright (c) 2008 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
- namespace yii\web;
-
- /**
- * SessionIterator implements an iterator for traversing session variables managed by [[Session]].
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @since 2.0
- */
- class SessionIterator implements \Iterator
- {
- /**
- * @var array list of keys in the map
- */
- private $_keys;
- /**
- * @var mixed current key
- */
- private $_key;
-
-
- /**
- * Constructor.
- */
- 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;
- }
- }
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