PhpDig.net - xls not recognized

Why aren't my Excel files recognized as application vnd.ms-excel ?

This is what I obtain when I try to index one of them :

Quote:

url :http://10.37.1.240/Ressources-Humain...n/base_bio.xls

ROBOT_FUNCTIONS : regs
Array
(
[0] => Content-Type: text/plain
[1] => text
[2] => plain
)

I've changed this in robot_functions

PHP Code:


		
			
$extension = substr($path, strlen($path)-4, strlen($path));

echo "extension ".$extension;

                if ($regs[1]=="text" &&    $extension==".xls")

                        $status = "MSEXCEL";

                else if ($regs[1] == "text") {

                  switch ($regs[2]) {

                       case 'plain':

                         $status = 'PLAINTEXT';

                       break;

                       case 'html':

                         $status = 'HTML';

                       break;

                       default :

                         $status = "NOFILE";

                         $stop = true;

                  }

               }

And now excel files are converted with xls2csv but still not indexed :cry:
(no green check mark and nothing in spider table...)