When running a PHP application on the Windows Azure platform in a
load-balanced mode (running 2 Web Role instances or more), it is important that
PHP session data can be shared between multiple Web Role instances.
The Windows Azure SDK for PHP provides the
Zend_Service_WindowsAzure_SessionHandler class, which uses
Windows Azure Table Storage as a session handler for PHP
applications.
To use the Zend_Service_WindowsAzure_SessionHandler session
handler, it should be registered as the default session handler for your
PHP application:
Example 907. Registering table storage session handler
<?php
$storageClient = new Zend_Service_WindowsAzure_Storage_Table(
'table.core.windows.net', 'myaccount', 'myauthkey'
);
$sessionHandler = new Zend_Service_WindowsAzure_SessionHandler(
$storageClient , 'sessionstable'
);
$sessionHandler->register();
The above classname registers the
Zend_Service_WindowsAzure_SessionHandler session handler and will
store sessions in a table called "sessionstable".
After registration of the
Zend_Service_WindowsAzure_SessionHandler session handler,
sessions can be started and used in the same way as a normal PHP
session:
Example 908. Using table storage session handler
<?php
$storageClient = new Zend_Service_WindowsAzure_Storage_Table(
'table.core.windows.net', 'myaccount', 'myauthkey'
);
$sessionHandler = new Zend_Service_WindowsAzure_SessionHandler(
$storageClient , 'sessionstable'
);
$sessionHandler->register();
session_start();
if (!isset($_SESSION['firstVisit'])) {
$_SESSION['firstVisit'] = time();
}
// ...
Warning
The Zend_Service_WindowsAzure_SessionHandler session handler
should be registered before a call to session_start()
is made!