what are the pros and cons of using this :

$globals['server_url'] = dirname(__FILE__);
$globals['mainfiles'] = dirname(__FILE__).'/main';

and the pros and cons of using this :

$globals['server_url'] = '/srv/www/htdocs/somwhere/';
$globals['mainfiles'] = '/srv/www/htdocs/somwhere/main';

And what do you suggest.

by the way: these are set in config.php file which is called by other files as well, to stop directory conflicts when including files we use it like this :

require_once($globals['server_url'].'/test.php');