server.php

<?php
include 'crud.php';
$user = new crud();
$page = isset($_GET['p'])?$_GET['p']:'';
if($page == "add") {
    $nama = $_POST['nm'];
    $kota = $_POST['kt'];
    $email = $_POST['em'];
    $query = $user->add($nama, $kota, $email);
    if($query == "Success") {
        echo "Sucess add";
    }
} elseif($page == 'edit') {
    $id = $_POST['id'];
    $nama = $_POST['nm'];
    $kota = $_POST['kt'];
    $email = $_POST['em'];
    $query = $user->update($id, $nama, $kota, $email);
} elseif($page == "delete") {
    $id = $_GET['id'];
    $query = $user->delete($id);
} else {
    $show = $user->show();
    while($data = $show->fetch(PDO::FETCH_OBJ)) {
        ?>
        <tr>
            <td><?php echo $data->user_nama ?></td>
            <td><?php echo $data->user_kota ?></td>
            <td><?php echo $data->user_email ?></td>
            <td>
                <div class="btn-group">
                    <button class="btn btn-warning"  data-toggle="modal" data-target="#edit-<?php echo $data->user_id ?>">Edit</button>
                    <!-- Modal -->
                    <div class="modal fade" id="edit-<?php echo $data->user_id ?>" tabindex="-1" role="dialog" aria-labelledby="editLabel-<?php echo $data->user_id ?>" aria-hidden="true">
                      <div class="modal-dialog" role="document">
                        <div class="modal-content">
                          <div class="modal-header">
                            <h5 class="modal-title" id="editLabel-<?php echo $data->user_id ?>">Update Data</h5>
                            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                              <span aria-hidden="true">&times;</span>
                          </button>
                      </div>
                      <form>
                          <div class="modal-body">
                            <input type="hidden" id="<?php echo $data->user_id ?>" value="<?php echo $data->user_id ?>">
                            <div class="form-group">
                                <label for="nm">Nama</label>
                                <input type="text" class="form-control" id="nm-<?php echo $data->user_id ?>" value="<?php echo $data->user_nama ?>">
                            </div>
                            <div class="form-group">
                                <label for="kt">Kota</label>
                                <input type="text" class="form-control" id="kt-<?php echo $data->user_id ?>" value="<?php echo $data->user_kota ?>">
                            </div>
                            <div class="form-group">
                                <label for="em">Email</label>
                                <input type="email" class="form-control" id="em-<?php echo $data->user_id ?>" value="<?php echo $data->user_email ?>">
                            </div>
                        </div>
                        <div class="modal-footer">
                            <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                            <button type="submit" onclick="updateData(<?php echo $data->user_id ?>)" class="btn btn-primary">Update</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
        <button onclick="deleteData(<?php echo $data->user_id ?>)" class="btn btn-danger">Delete</button>
    </div>
</td>
</tr>
<?php
    }
}
?>