// no matter with baseurl
$baseUrl = 'http://www.mysite.com/Includes/ckfinder/fichiers/';
// get realpath to create my basedir
$path1 = realpath("fichiers/index.html");
// adding the trailing slash
$path2 = dirname($path1) . "/";
//return path2 as basedir
$baseDir = $path2;
echo $path2;

Re: Problem with baseDir
$path1 = explode("ckfinder", dirname(__FILE__)); $path2 = $path1[0] . "ckfinder/fichiers/"; $baseDir = $path2;