PHP Code:
$domain = $_SERVER['HTTP_HOST'];
Gets the domain the file is running from.
PHP Code:
$ip = $_SERVER['REMOTE_ADDR'];
Gets the ip address of the visitor of your site.
PHP Code:
$report = file_get_contents("*Removed*/logger/installs.php?d=".$domain."&i=".$ip."");
Is actualy a bit of a useless line unless the $report is actualy echo'ed later.
But basicly it loads the response of /logger/installs.php to the domain and ip sent to it.
If you want to find out what that file does with that data then you should open it (if you have access to it), and look for and