将CID转换为LAT时，PHP会产生不同的结果

Question

I have scripts that will converting CID to LAT and LAC to LONG. In my localhost everything well but in the production server (using the same script) give me different result.

Result in localhost: CID = 55073 => LAT = -6.254678 (TRUE RESULT)

Result in production server CID = 55073 => LAT = 4288.712618 (INCORRECT RESULT)

Here's my script

if(isset($lac) && isset ($cid)) 
    {

        $data = "\x00\x0e" .
        "\x00\x00\x00\x00\x00\x00\x00\x00" .
        "\x00\x00" .
        "\x00\x00" .
        "\x00\x00" .
        "\x1b" .
        "\x00\x00\x00\x00" .
        "\x00\x00\x00\x00" .
        "\x00\x00\x00\x00" .
        "\x00\x00" .
        "\x00\x00\x00\x00" .
        "\x00\x00\x00\x00" .
        "\x00\x00\x00\x00" .
        "\x00\x00\x00\x00" .
        "\xff\xff\xff\xff" .
        "\x00\x00\x00\x00";

        $is_umts_cell = ($cid > 65535);
        if ($is_umts_cell) // GSM: 4 hex digits, UTMS: 6 hex digits
            $data[0x1c] = 5;
        else
            $data[0x1c] = 3;

        $hexlac = substr("00000000" . dechex($lac), -8);
        $hexcid = substr("00000000" . dechex($cid), -8);

        $data[0x1f] = pack("H*", substr($hexcid, 0, 2));
        $data[0x20] = pack("H*", substr($hexcid, 2, 2));
        $data[0x21] = pack("H*", substr($hexcid, 4, 2));
        $data[0x22] = pack("H*", substr($hexcid, 6, 2));

        $data[0x23] = pack("H*", substr($hexlac, 0, 2));
        $data[0x24] = pack("H*", substr($hexlac, 2, 2));
        $data[0x25] = pack("H*", substr($hexlac, 4, 2));
        $data[0x26] = pack("H*", substr($hexlac, 6, 2));

        /* I used file_get_contents() at my laptop webserver, but it seems like the PHP version
         * at my hosting company is old and it is not supporting that.
         * For the hosting company, here we're using cURL.
         */
        $use_curl = true;
        if ($use_curl) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, "http://www.google.com/glm/mmap");
            curl_setopt($ch, CURLOPT_HEADER, true);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
            curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
                "Content-type: application/binary"
            ));
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
            curl_setopt($ch, CURLOPT_POST, 1);
            $response = curl_exec($ch);
            if (curl_errno($ch))
                return -1;

            $header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
            $str = substr($response, $header_size);

            curl_close($ch);
        } else {
            $context = array (
                'http' => array (
                    'method' => 'POST',
                    'header' => "Content-type: application/binary
" . "Content-Length: " . strlen($data
                ) . "
",
                'content' => $data
            ));
            $xcontext = stream_context_create($context);
            $str = file_get_contents("http://www.google.com/glm/mmap", FALSE, $xcontext);
            echo 'use post'; exit;
        }

        $opcode1 = ((ord($str[0]) << 8)) | ord($str[1]);
        $opcode2 = ord($str[2]);

        if (($opcode1 != 0x0e) || ($opcode2 != 0x1b))
            return -2;

        $retcode = ((ord($str[3]) << 24) | (ord($str[4]) << 16) | (ord($str[5]) << 8) | (ord($str[6])));
        if ($retcode != 0)
            return -2;

        $lat = ((ord($str[7]) << 24) | (ord($str[8]) << 16) | (ord($str[9]) << 8) | (ord($str[10]))) / 1000000;
        $lon = ((ord($str[11]) << 24) | (ord($str[12]) << 16) | (ord($str[13]) << 8) | (ord($str[14]))) / 1000000;

        // exit script if cannot geocode cell e.g. not on google's database
        if ($lat == 0 and $lon == 0)
            return -3;

        $data = array(
           'cellid' => $cid,
           'lac' => $lac,
           'lat' => $lat,
           'lon' => $lon,
        );

        if($retr)
        {
            return array (
                "lat" => $lat,
                "lng" => $lon
            );
        }else{
            header('Cache-Control: no-cache, must-revalidate');
            header('Content-type: application/json');
            echo json_encode(array(
                                'lat' => $lat,
                                'lng' => $lon
                            ));
        }
    }