how to reference file one folder up and down?

I am trying to reference a file one folder up and then down a few folders:

PHP Code:

include "../common/KoolControls/KoolGrid/koolgrid.php"; 


But this does not work, when the 'include' is in the file views/actors (see above)

Can anyone enlight me?

Thanks in advance.

Try this

PHP Code:

$path = rtrim(__DIR__, '/') . '/';
$path .= "../common/KoolControls/KoolGrid/koolgrid.php";
include $path;