"Silently" redirecting to a different controller?

[eluser]ech0[/eluser]
How ugly, in terms of speed, is this kind of solution?

<b>routes.php</b>:

Code:

/*
| -------------------------------------------------------------------------
| DYNAMIC ROUTES
| -------------------------------------------------------------------------
*/
$fh = fopen(realpath('routes.csv'), 'r');
while (($data = fgetcsv($fh, 100)) !== FALSE)
// $data[0] = fake URI
// $data[1] = module name
// $data[2] = page id
{    
    // route to controller/index
    $route[$data[0]] = 'modules/'.$data[1].'/index/'.$data[2];
    // route to controller/method/params
    $route[$data[0].'/(:any)/(:any)'] = 'modules/'.$data[1].'/$1/'.$data[2].'/$2';
}
fclose($fh);