/**
* __construct() - Returns an instance object bound to a particular, isolated section
* of the session, identified by $namespace name (defaulting to 'Default').
* The optional argument $singleInstance will prevent construction of additional
* instance objects acting as accessors to this $namespace.
*
* @param string $namespace - programmatic name of the requested namespace
* @param bool $singleInstance - prevent creation of additional accessor instance objects for this namespace
* @return void
*/
public function __construct($namespace = 'Default', $singleInstance = false)
{
if ($namespace === '') {
/**
* @see IfwPsn_Vendor_Zend_Session_Exception
*/
require_once IFW_PSN_LIB_ROOT . 'IfwPsn/Vendor/Zend/Session/Exception.php';
throw new IfwPsn_Vendor_Zend_Session_Exception('Session namespace must be a non-empty string.');
}
if ($namespace[0] == "_") {
/**
* @see IfwPsn_Vendor_Zend_Session_Exception
*/
require_once IFW_PSN_LIB_ROOT . 'IfwPsn/Vendor/Zend/Session/Exception.php';
throw new IfwPsn_Vendor_Zend_Session_Exception('Session namespace must not start with an underscore.');
}
if (preg_match('#(^[0-9])#i', $namespace[0])) {
/**
* @see IfwPsn_Vendor_Zend_Session_Exception
*/
require_once IFW_PSN_LIB_ROOT . 'IfwPsn/Vendor/Zend/Session/Exception.php';
throw new IfwPsn_Vendor_Zend_Session_Exception('Session namespace must not start with a number.');
}
if (isset(self::$_singleInstances[$namespace])) {
/**
* @see IfwPsn_Vendor_Zend_Session_Exception
*/
require_once IFW_PSN_LIB_ROOT . 'IfwPsn/Vendor/Zend/Session/Exception.php';
throw new IfwPsn_Vendor_Zend_Session_Exception("A session namespace object already exists for this namespace ('{$namespace}'), and no additional accessors (session namespace objects) for this namespace are permitted.");
}
if ($singleInstance === true) {
self::$_singleInstances[$namespace] = true;
}
$this->_namespace = $namespace;
// Process metadata specific only to this namespace.
IfwPsn_Vendor_Zend_Session::start(true);
// attempt auto-start (throws exception if strict option set)
if (self::$_readable === false) {
/**
* @see IfwPsn_Vendor_Zend_Session_Exception
*/
require_once IFW_PSN_LIB_ROOT . 'IfwPsn/Vendor/Zend/Session/Exception.php';
throw new IfwPsn_Vendor_Zend_Session_Exception(self::_THROW_NOT_READABLE_MSG);
}
if (!isset($_SESSION['__ZF'])) {
return;
// no further processing needed
}
// do not allow write access to namespaces, after stop() or writeClose()
if (parent::$_writable === true) {
if (isset($_SESSION['__ZF'][$namespace])) {
// Expire Namespace by Namespace Hop (ENNH)
if (isset($_SESSION['__ZF'][$namespace]['ENNH'])) {
$_SESSION['__ZF'][$namespace]['ENNH']--;
if ($_SESSION['__ZF'][$namespace]['ENNH'] === 0) {
if (isset($_SESSION[$namespace])) {
self::$_expiringData[$namespace] = $_SESSION[$namespace];
unset($_SESSION[$namespace]);
}
unset($_SESSION['__ZF'][$namespace]);
}
}
// Expire Namespace Variables by Namespace Hop (ENVNH)
if (isset($_SESSION['__ZF'][$namespace]['ENVNH'])) {
foreach ($_SESSION['__ZF'][$namespace]['ENVNH'] as $variable => $hops) {
$_SESSION['__ZF'][$namespace]['ENVNH'][$variable]--;
if ($_SESSION['__ZF'][$namespace]['ENVNH'][$variable] === 0) {
if (isset($_SESSION[$namespace][$variable])) {
self::$_expiringData[$namespace][$variable] = $_SESSION[$namespace][$variable];
unset($_SESSION[$namespace][$variable]);
}
unset($_SESSION['__ZF'][$namespace]['ENVNH'][$variable]);
}
}
if (empty($_SESSION['__ZF'][$namespace]['ENVNH'])) {
unset($_SESSION['__ZF'][$namespace]['ENVNH']);
}
}
}
if (empty($_SESSION['__ZF'][$namespace])) {
unset($_SESSION['__ZF'][$namespace]);
}
if (empty($_SESSION['__ZF'])) {
unset($_SESSION['__ZF']);
}
}
}
