Double Inset dua database

<?php
//mysql_connect
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "surat";

// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
 if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

//postgresql
$host = "localhost";
$user = "postgres";
$pass = "........";
$db = "dikti";

$con = pg_connect("host=$host dbname=$db user=$user password=$pass")
    or die ("Could not connect to server\n");

   
//ambil data

$nomor= "";

$tanggal_agenda = $_POST["tanggal_agenda"];


function rubah_tgl_th($th)
{
    $exp = explode(' ',$th);
    if (count($exp) == 3)
    {
        $th =$exp[2];
    }
    return $th;
}

//rubah tanggal ke bulan ----
function rubah_tgl_bl($bl)
{
    $exp = explode(' ',$bl);
    if (count($exp) == 3)
    {
        $bl =$exp[1];
    }
    return $bl;
}

//rubah tanggal ke hari ----
function rubah_tgl_hr($hr)
{
    $exp = explode(' ',$hr);
    if (count($exp) == 3)
    {
        $hr =$exp[0];
    }
    return $hr;
}

$tgta= rubah_tgl_hr($tanggal_agenda);
$blta= rubah_tgl_bl($tanggal_agenda);
$thta= rubah_tgl_th($tanggal_agenda);
$jamta=  "";
$na=  $_POST["na"];
$na1=  $_POST["na1"];
$na2=  $_POST["na2"];
$na3=  $_POST["na3"];

$tanggal_surat_masuk = $_POST["tanggal_surat_masuk"];
$tgts= rubah_tgl_hr($tanggal_surat_masuk);
$blts= rubah_tgl_bl($tanggal_surat_masuk);
$thts= rubah_tgl_th($tanggal_surat_masuk);

$ns=  $_POST["ns"];
$klm=  $_POST["klm"];
$lokasi=  $_POST["lokasi"];
$asr=  $_POST["asr"];
$hl=  $_POST["hl"];
$kpd=  $_POST["kpd"];
$tgldis=  $_POST["tgldis"];
$tgldis1=  $_POST["tgldis1"];
$jamds=  $_POST["jamds"];
$jamds1=  $_POST["jamds1"];
$ds1=  $_POST["ds1"];
$ds2=  $_POST["ds2"];
$ds3=  $_POST["ds3"];
$ds4=  $_POST["ds4"];
$ds5=  $_POST["ds5"];
$ids1=  $_POST["ids1"];
$ids2=  $_POST["ids2"];
$ids3=  $_POST["ids3"];
$ids4=  $_POST["ids4"];
$ids5=  $_POST["ids5"];
$td1=  $_POST["td1"];
$tgtd1=  $_POST["tgtd1"];
$td2=  $_POST["td2"];
$tgtd2=  $_POST["tgtd2"];
$td3=  $_POST["td3"];
$tgtd3=  $_POST["tgtd3"];
$td4=  $_POST["td4"];
$tgtd4=  $_POST["tgtd4"];
$td5=  $_POST["td5"];
$tgtd5=  $_POST["tgtd5"];
$ntd1=  $_POST["ntd1"];
$ntd2=  $_POST["ntd2"];
$ntd3=  $_POST["ntd3"];
$ntd4=  $_POST["ntd4"];
$ntd5=  $_POST["ntd5"];

//sql masuk

$sql = "INSERT INTO `dpa2016` VALUES ('$nomor', '$tgta', '$blta', '$thta', '$jamta', '$na', '$na1', '$na2', '$na3', '$tgts', '$blts', '$thts', '$ns', '$klm', '$lokasi', '$asr', '$hl', '$kpd', '$tgldis', '$tgldis1', '$jamds', '$jamds1', '$ds1', '$ds2', '$ds3', '$ds4', '$ds5', '$ids1', '$ids2', '$ids3', '$ids4', '$ids5', '$td1', '$tgtd1', '$td2', '$tgtd2', '$td3', '$tgtd3', '$td4', '$tgtd4', '$td5', '$tgtd5', '$ntd1', '$ntd2', '$ntd3', '$ntd4', '$ntd5')";
if (mysqli_query($conn, $sql)) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . mysqli_error($conn);
} 

//sql postgre
$sql_postgre = "INSERT INTO surat_masuk VALUES ('$nomor', '$tgta', '$blta', '$thta', '$jamta', '$na', '$na1', '$na2', '$na3', '$tgts', '$blts', '$thts', '$ns', '$klm', '$lokasi', '$asr', '$hl', '$kpd', '$tgldis', '$tgldis1', '$jamds', '$jamds1', '$ds1', '$ds2', '$ds3', '$ds4', '$ds5', '$ids1', '$ids2', '$ids3', '$ids4', '$ids5', '$td1', '$tgtd1', '$td2', '$tgtd2', '$td3', '$tgtd3', '$td4', '$tgtd4', '$td5', '$tgtd5', '$ntd1', '$ntd2', '$ntd3', '$ntd4', '$ntd5')";
$result = pg_query($con, $sql_postgre);   
                 
pg_close($con);
mysqli_close($conn);

header("location: surat_masuk_internal.php");

?>