PHPDaemon\Utils\Binary::getDWord PHP Method

    public static function getDWord(&$p, $l = false)
    {
        $r = static::bytes2int(mb_orig_substr($p, 0, 4), !!$l);
        $p = mb_orig_substr($p, 4);
        return (int) $r;
    }

 /**
  * Called when new UDP packet received.
  * @param  string $pct
  * @return void
  */
 public function onUdpPacket($pct)
 {
     $orig = $pct;
     $this->response = [];
     /*$id = */
     Binary::getWord($pct);
     $bitmap = Binary::getBitmap(Binary::getByte($pct)) . Binary::getBitmap(Binary::getByte($pct));
     //$qr = (int) $bitmap[0];
     $opcode = bindec(substr($bitmap, 1, 4));
     //$aa = (int) $bitmap[5];
     //$tc = (int) $bitmap[6];
     //$rd = (int) $bitmap[7];
     //$ra = (int) $bitmap[8];
     //$z = bindec(substr($bitmap, 9, 3));
     //$rcode = bindec(substr($bitmap, 12));
     $qdcount = Binary::getWord($pct);
     $ancount = Binary::getWord($pct);
     $nscount = Binary::getWord($pct);
     $arcount = Binary::getWord($pct);
     for ($i = 0; $i < $qdcount; ++$i) {
         $name = Binary::parseLabels($pct, $orig);
         $typeInt = Binary::getWord($pct);
         $type = isset(Pool::$type[$typeInt]) ? Pool::$type[$typeInt] : 'UNK(' . $typeInt . ')';
         $classInt = Binary::getWord($pct);
         $class = isset(Pool::$class[$classInt]) ? Pool::$class[$classInt] : 'UNK(' . $classInt . ')';
         if (!isset($this->response[$type])) {
             $this->response[$type] = [];
         }
         $record = ['name' => $name, 'type' => $type, 'class' => $class];
         $this->response['query'][] = $record;
     }
     $getResRecord = function (&$pct) use($orig) {
         $name = Binary::parseLabels($pct, $orig);
         $typeInt = Binary::getWord($pct);
         $type = isset(Pool::$type[$typeInt]) ? Pool::$type[$typeInt] : 'UNK(' . $typeInt . ')';
         $classInt = Binary::getWord($pct);
         $class = isset(Pool::$class[$classInt]) ? Pool::$class[$classInt] : 'UNK(' . $classInt . ')';
         $ttl = Binary::getDWord($pct);
         $length = Binary::getWord($pct);
         $data = binarySubstr($pct, 0, $length);
         $pct = binarySubstr($pct, $length);
         $record = ['name' => $name, 'type' => $type, 'class' => $class, 'ttl' => $ttl];
         if ($type === 'A') {
             if ($data === "") {
                 $record['ip'] = false;
                 $record['ttl'] = 5;
             } else {
                 $record['ip'] = inet_ntop($data);
             }
         } elseif ($type === 'NS') {
             $record['ns'] = Binary::parseLabels($data);
         } elseif ($type === 'CNAME') {
             $record['cname'] = Binary::parseLabels($data, $orig);
         }
         return $record;
     };
     for ($i = 0; $i < $ancount; ++$i) {
         $record = $getResRecord($pct);
         if (!isset($this->response[$record['type']])) {
             $this->response[$record['type']] = [];
         }
         $this->response[$record['type']][] = $record;
     }
     for ($i = 0; $i < $nscount; ++$i) {
         $record = $getResRecord($pct);
         if (!isset($this->response[$record['type']])) {
             $this->response[$record['type']] = [];
         }
         $this->response[$record['type']][] = $record;
     }
     for ($i = 0; $i < $arcount; ++$i) {
         $record = $getResRecord($pct);
         if (!isset($this->response[$record['type']])) {
             $this->response[$record['type']] = [];
         }
         $this->response[$record['type']][] = $record;
     }
     $this->onResponse->executeOne($this->response);
     if (!$this->keepalive) {
         $this->finish();
         return;
     } else {
         $this->checkFree();
     }
 }