[Resolved] code confusion

[getphp]

I am going through a very directory script called Cncat ..I have come to this file and seem to be struggling at understand at what this is doing?

ini_set("session.use_trans_sid",0);
if (version_compare(phpversion(), "4.2.0", ">=")) $ob=TRUE; else $ob=FALSE;

if ($ob) {ob_start();ob_implicit_flush(0);}
include "config.php";
error_reporting(E_ALL & ~E_NOTICE);
if ($ob) {ob_clean();ob_implicit_flush(1);}

$u=intval($QUERY_STRING);
@mysql_query("UPDATE ".$db["prefix"]."main SET gin=gin+1 WHERE lid='$u';");
header("Location: ./");
?>

[laserlight]

//set the php.ini value of session.use_trans_sid at run-time
ini_set("session.use_trans_sid",0);
//is the version of PHP on this server >= 4.2.0 ?
//if so, set $ob to true, otherwise set $ob to false
if (version_compare(phpversion(), "4.2.0", ">=")) $ob=TRUE; else $ob=FALSE;
//if the version of PHP >= 4.2.0 (as $ob is true),
//start output buffering and turn implicit flush off
if ($ob) {ob_start();ob_implicit_flush(0);}
include "config.php";
//set run-time error reporting to report all errors except notices
error_reporting(E_ALL & ~E_NOTICE);
//erase output buffer, turn implicit flush on
if ($ob) {ob_clean();ob_implicit_flush(1);} 

[getphp]

Your the maaan!!!!
umm sorry woman 🆒