Driver_Database_Driver_Postgre::_get_dsn

protected function _get_dsn($database, $hostname, $port, $socket, $username, $password, $persistent, $config)
{
    $dsn = '';

    if (false!==strpos($hostname, '/'))
    {
        // If UNIX sockets are used, we shouldn't set a port
        $port = '';
    }

    $hostname === '' OR $dsn = 'host='. $hostname .' ';


    if (!empty($port) && ctype_digit($port))
    {
        $dsn .= 'port='. $port .' ';
    }

    if ($username!=='')
    {
        $dsn .= 'user='. $username .' ';

        /* An empty password is valid!
         *
        * $db['password'] = NULL must be done in order to ignore it.
        */
        $password === null OR $dsn .= "password='" . $password ."' ";
    }

    $database === '' OR $dsn .= 'dbname='. $database .' ';

    /* We don't have these options as elements in our standard configuration
     * array, but they might be set by parse_url() if the configuration was
    * provided via string. Example:
    *
    * postgre://username:password@localhost:5432/database?connect_timeout=5&sslmode=1
    */
    foreach (array('connect_timeout', 'options', 'sslmode', 'service') as $key)
    {
        if (isset($config[$key]) && is_string($config[$key]) && $config[$key] !== '')
        {
            $dsn .= $key."='". $config[$key] ."' ";
        }
    }

    $dsn = rtrim($dsn);

    return $dsn;
}