Module_Storage_Driver_Database::set

public function set($key, $value = null)
{
    if (IS_DEBUG)Core::debug()->info($key, 'database storage set key');

    if (is_array($key))
    {
        foreach ($key as $k=>$v)
        {
            $k = $this->prefix . $k;

            $this->_format_data($value[$k]);

            $data = array
            (
                md5($k),
                $k,
                $value[$k],
            );

            $this->_handler->values($data);
        }
    }
    else
    {
        $key = $this->prefix . $key;

        $this->_format_data($value);
        $data = array
        (
            md5($key),
            $key,
            $value,
        );

        $this->_handler->values($data);
    }

    $rs = $this->_handler->columns(array('key', 'key_string', 'value'))->replace($this->tablename);

    if ($rs[0])
    {
        return true;
    }
    else
    {
        return false;
    }
}