Zend_Session_SaveHandler_DbTable

The basic setup for Zend_Session_SaveHandler_DbTable must at least have four columns, denoted in the config array or Zend_Config object: primary, which is the primary key and defaults to just the session id which by default is a string of length 32; modified, which is the unix timestamp of the last modified date; lifetime, which is the lifetime of the session (modified + lifetime > time();); and data, which is the serialized data stored in the session

Example #1 Basic Setup

CREATE TABLE `session` (
  `id` char(32),
  `modified` int,
  `lifetime` int,
  `data` text,
  PRIMARY KEY (`id`)
);

//get your database connection ready
$db = Zend_Db::factory('Pdo_Mysql', array(
    'host'        =>'example.com',
    'username'    => 'dbuser',
    'password'    => '******',
    'dbname'    => 'dbname'
));
 
//you can either set the Zend_Db_Table default adapter
//or you can pass the db connection straight to the save handler $config
Zend_Db_Table_Abstract::setDefaultAdapter($db);
$config = array(
    'name'           => 'session',
    'primary'        => 'id',
    'modifiedColumn' => 'modified',
    'dataColumn'     => 'data',
    'lifetimeColumn' => 'lifetime'
);
 
//create your Zend_Session_SaveHandler_DbTable and
//set the save handler for Zend_Session
Zend_Session::setSaveHandler(new Zend_Session_SaveHandler_DbTable($config));
 
//start your session!
Zend_Session::start();
 
//now you can use Zend_Session like any other time

You can also use Multiple Columns in your primary key for Zend_Session_SaveHandler_DbTable.

Example #2 Using a Multi-Column Primary Key

CREATE TABLE `session` (
    `session_id` char(32) NOT NULL,
    `save_path` varchar(32) NOT NULL,
    `name` varchar(32) NOT NULL DEFAULT '',
    `modified` int,
    `lifetime` int,
    `session_data` text,
    PRIMARY KEY (`Session_ID`, `save_path`, `name`)
);

//setup your DB connection like before
//NOTE: this config is also passed to Zend_Db_Table so anything specific
//to the table can be put in the config as well
$config = array(
    'name'              => 'session', //table name as per Zend_Db_Table
    'primary'           => array(
        'session_id',   //the sessionID given by PHP
        'save_path',    //session.save_path
        'name',         //session name
    ),
    'primaryAssignment' => array(
        //you must tell the save handler which columns you
        //are using as the primary key. ORDER IS IMPORTANT
        'sessionId', //first column of the primary key is of the sessionID
        'sessionSavePath', //second column of the primary key is the save path
        'sessionName', //third column of the primary key is the session name
    ),
    'modifiedColumn'    => 'modified',     //time the session should expire
    'dataColumn'        => 'session_data', //serialized data
    'lifetimeColumn'    => 'lifetime',     //end of life for a specific record
);
 
//Tell Zend_Session to use your Save Handler
Zend_Session::setSaveHandler(new Zend_Session_SaveHandler_DbTable($config));
 
//start your session
Zend_Session::start();
 
//use Zend_Session as normal