public function write($id, $value)
{
$sessions_table = new Sessions();
$lifetime = (int) Bolts_Registry::get('session_timeout');
$expiration = time() + $lifetime;
$data = array('id' => $id, 'value' => $value, 'expiration' => $expiration);
$where = $sessions_table->getAdapter()->quoteInto('id = ?', $id);
if ($sessions_table->getCountByWhereClause($where) > 0) {
$sessions_table->update($data, $where);
} else {
$id = $sessions_table->insert($data);
}
}