8th Dec 2021DataTables warning: table id=user_data - Invalid JSON response. For more information about this erro
index.php
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" type="text/css"
href="https://cdn.datatables.net/v/bs5/jq-3.6.0/dt-1.11.3/datatables.min.css" />
<title>Jquery DataTable CRUD</title>
</head>
<body>
<div class="container-fluid">
<div class="w-100 d-flex align-item-center justify-content-center">
<div class="col-md-8 p-2">
<table id="user_data" class="table table-striped">
<thead>
<tr>
<th scope="col">sl No.</th>
<th scope="col">Name</th>
<th scope="col">Phone</th>
<th scope="col">Email</th>
<th scope="col">Address</th>
<th scope="col">Action</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/v/bs5/jq-3.6.0/dt-1.11.3/datatables.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
<script>
$(document).ready(function () {
// var dataTable = $('#datatable').DataTable({
// 'processing': true,
// 'serverSide': true,
// 'order': [],
// 'ajax': {
// 'type' : 'POST',
// 'url' : 'backend.php',
// },
// 'columnDefs': [{
// 'target': [0, 5],
// 'orderable': false,
// }, ],
// });
$.ajax({
type: "POST",
url: "backend.php",
// data: "data",
dataType: "JSON",
success: function (data) {
$('#user_data').DataTable({
processing: true,
serverSide: true,
deferRender: true,
ordering: false,
pagingType: 'full_numbers',
'columnDefs': [{
'target': [0, 5],
'orderable': false,
}, ],
});
}
});
});
</script>
</body>
</html>
backend.php'
```
<?php
$servername = "localhost";
$username = "root";
$password = "";
$db = "jquerydatatable";
// Connection
$conn = mysqli_connect($servername,$username, $password, $db);
// Check if connection is
// Successful or not
if (!$conn) {
die("Connection failed: "
. mysqli_connect_error());
}
// echo "all set";
// if(isset($_POST['data']))
// {
$query = "SELECT * FROM mytable";
$res = mysqli_query($conn, $query);
$count_row = mysqli_num_rows($res);
// for search box
if(isset($_POST['search']['value'])){
$serachValue = $_POST['search']['value'];
$query .= "WHERE name LIKE '%".$serachValue."%'";
$query .= "WHERE phone LIKE '%".$serachValue."%'";
$query .= "WHERE email LIKE '%".$serachValue."%'";
$query .= "WHERE address LIKE '%".$serachValue."%'";
}
// for order
if(isset($_POST['order'])){
$column = $_POST['order'][0]['column'];
$order = $_POST['order'][0]['dir'];
$query .= "ORDER BY '".$column."' ".$order;
}
else{
$query .= "ORDER BY id ASC";
}
// pegination
// if(isset($_POST["length"]) != -1){
// $query .= "LIMIT ".$_POST['start'].", ".$_POST['length'];
// }
$data = array();
$res2 = mysqli_query($conn,$query);
$filterd_rows = mysqli_num_rows($res2);
while($arr = mysqli_fetch_assoc($res2)){
$subArray = array();
$subArray[] = $arr['id'];
$subArray[] = $arr['name'];
$subArray[] = $arr['phone'];
$subArray[] = $arr['email'];
$subArray[] = $arr['address'];
$subArray[] = '<div class="btn-group" role="group" aria-label="Action Buttons">
<button type="button" class="btn btn-sm btn-success">Edit</button>
<button type="button" class="btn btn-sm btn-danger">Delete</button>
</div>';
$data[] = $subArray;
}
$output = array(
"draw" => intval(isset($_POST['draw'])),
'recordsTotal' => $count_row,
'recordsFiltered' => $filterd_rows,
'data' => $data,
);
// echo json_encode($output);
echo json_encode($output);
// echo json_encode(array("data" => $output));
// }
HERE SHOW LENGTH , START AND DRAW IS UNDEFIND THST IS WHAY I WAS COMMENT IT ... PLEASE CHECK MY CODE AND PLEASE GIVE ME THE REPLY