[Wiki] Syncing sessions between Yii and KCFinder

class SessionSaveHandler 
{
    protected $savePath;
    protected $sessionName;
 
    public $db;
    public $sessionTableName;
 
    public function __construct() 
    {
        $this->loadConfig();
 
        session_name($this->sessionName);
 
        session_set_save_handler(
            array($this, "open"),
            array($this, "close"),
            array($this, "read"),
            array($this, "write"),
            array($this, "destroy"),
            array($this, "gc")
        );
    }
 
    public function loadConfig()
    {   
        // application configuration file
        $config_file = dirname(__FILE__) . '/../../../protected/config/main.php';
        $find = array('<?php', '?>');
        $replace = array('', '');
        $configuration = eval(str_replace($find, $replace, file_get_contents($config_file)));
 
        $this->sessionName = $configuration['components']['session']['sessionName'];
 
        $this->db = $configuration['components']['db'];
        $this->sessionTableName = $configuration['components']['session']['sessionTableName'];
    }
 
    public function open($savePath, $sessionName) {
        return true;
    }
 
    public function close() {
        return true;
    }
 
    public function read($id) {
        try {
            $dbh = new PDO($this->db['connectionString'], $this->db['username'], $this->db['password']);
            $statement = $dbh->prepare("SELECT data FROM $this->sessionTableName WHERE id = :id AND expire > :expire");
            $statement->bindParam(':id', $id, PDO::PARAM_STR);
            $statement->bindParam(':expire', time(), PDO::PARAM_INT);
            $statement->setFetchMode(PDO::FETCH_ASSOC);
            $result = $statement->execute();
            if ($result) {
                $row = $statement->fetch();
                return $row['data'];
            }
        } catch (PDOException $e) {
            //
        }
 
        return '';
    }
 
    public function write($id, $data) {
        return true;
    }
 
    public function destroy($id) {
        return true;
    }
 
    public function gc($maxlifetime) {
        return true;
    }
}
 
new SessionSaveHandler();