<form action="upload_file.php" method="post" enctype="multipart/form-data">
             <div class="form-group">
                <label for="exampleInputEmail1">Upload File</label>
                <input type="file"  class="form-control" id="upload_file" name="upload_file[]" onchange="preview_image();" multiple/>
                <small id="emailHelp" class="form-text text-muted">*upload gambar disini.</small>
                <label for="exampleInputEmail1" style="margin-top:10px;">Jenis Aplikasi</label>
                <select class="form-control" name="jenis">
                  <option value="0">Pilih Jenis</option>
                  <?php

                  $servername = "localhost";
                  $username = "root";
                  $password = "";
                  $dbname = "db_images";

                  // Create connection
                  $conn = new mysqli($servername, $username, $password, $dbname);
                  $sql = "SELECT * FROM tb_id_app where jenis = '2' order by id desc";
                  $result = $conn->query($sql);
                  while($row = $result->fetch_assoc()) { ?>
                  ?>
                  <option value="<?php echo $row['id'];?>"><?php echo $row['app_id'];?></option>
                <?php }?>
                </select>
              </div>
            <input type="submit" name='submit_image'  class="btn btn-primary" value="Upload Image"/>
           </form>


<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "db_images";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

if(isset($_POST['submit_image']))
{
for($i=0;$i<count($_FILES["upload_file"]["name"]);$i++)
{
 $uploadfile=$_FILES["upload_file"]["tmp_name"][$i];
 $folder="wallpaper1/";
 $time = date("Y-m-d h:i:sa");
 $array = explode('.', $_FILES["upload_file"]["name"][$i]);

 $name = md5($time."".$_FILES["upload_file"]["name"][$i]).".".$array[count($array)-1];
 move_uploaded_file($_FILES["upload_file"]["tmp_name"][$i], "$folder".$name);

 //INSERT INTO `db_wallpaper`(`id`, `image`) VALUES ([value-1],[value-2])
 $sql = "INSERT INTO `db_wallpaper`(`id`, `image`,`id_app`) VALUES (0,'".$name."','".$_REQUEST['jenis']."')";

 if ($conn->query($sql) === TRUE) {
     echo "New record created successfully";
 } else {
     echo "Error: " . $sql . "<br>" . $conn->error;
 }
}
exit();
}


$conn->close();
?>