Try this
<?php
$host = "localhost";
$username = "root";
$password = "root";
$db_name = "test2.0";
$tbl_name = "permohonan";
mysql_connect("$host", "$username", "$password") or die("cannot connect");
mysql_select_db("$db_name") or die("cannot select DB");
if (isset($_POST['submit'])) {
$Jabatan = mysql_real_escape_string($_POST['Jabatan']);
$unit = mysql_real_escape_string($_POST['unit']);
$lain2 = mysql_real_escape_string($_POST['lain2']);
$nama_pemohon = mysql_real_escape_string($_POST['nama_pemohon']);
$destinasi = mysql_real_escape_string($_POST['destinasi']);
$tujuan = mysql_real_escape_string($_POST['tujuan']);
$maklumat_ = mysql_real_escape_string($_POST['maklumat_']);
$datedepart_ = mysql_real_escape_string($_POST['datedepart_']);
$timedepart_ = mysql_real_escape_string($_POST['timedepart_']);
$datearrive_ = mysql_real_escape_string($_POST['datearrive_']);
$timearrive_ = mysql_real_escape_string($_POST['timearrive_']);
$query1 = mysql_query("INSERT INTO permohonan VALUES(NULL,'$Jabatan','$unit','$lain2','$nama_pemohon','$destinasi','$tujuan','$maklumat_','$datedepart_','$timedepart_,'$datearrive_',$timearrive_')");
if ($query1) {
header("location : reservationform.php");
}
else
{
echo mysql_errno() . ": " . mysql_error() . "\n";
}
}
?>