Session creates new session id on every page load

[eluser]benharrison[/eluser]
I am currently using the code you recommended in your initial response to this thread:

Code:

if(isset($_SERVER['HTTP_HOST']))
{
    $config['base_url'] = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ? 'https' : 'http';
    $config['base_url'] .= '://'. $_SERVER['HTTP_HOST'];
    $config['base_url'] .= isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] != '80' ? ( ':'.$_SERVER['SERVER_PORT'] ) : '';
    $config['base_url'] .= str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
}
else
{
    $config['base_url'] = 'http://localhost/';
}

Code:

$base_url_parts = parse_url($config['base_url']);
$config['cookie_prefix']    = "";
$config['cookie_domain']    = $base_url_parts['host'];
$config['cookie_path']        = $base_url_parts['path'];
unset($base_url_parts);