Blank page under 'Log files management'

[fleblic]

The php script 'http://localhost/gesdoc/out/out.LogManagement.php' stops running in:

if (isset($_GET["logname"])) $logname=$_GET["logname"];
else if (@readlink($settings->_contentDir."current.log")){
$logname=basename(@readlink($settings->_contentDir."current.log"));
}

After these lines, If I write:

echo "Good Bye";
die;

I don't get the Good Bye in the blank page.

I have no idea why