Datatable

<!DOCType html>
<head>
<link href="https://cdn.datatables.net/1.10.13/css/jquery.dataTables.min.css">
<script src="https://code.jquery.com/jquery-2.2.4.min.js" integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script>
</head>
<body>
    <table id="datatablemasters" class="table table-striped table-bordered hover order-column" width="100%" cellspacing="0">
            <thead>
            <tr>
                    <th>Country Sno</th>
                    <th>Country Code</th>
                    <th>Country Name</th>
                    <th>Description</th>
                    <th>Action</th>

            </tr>
            </thead>
    </table>
<script src="https://cdn.datatables.net/1.10.13/js/jquery.dataTables.min.js"></script>
<script>
    $(document).ready(function(){
                $('#datatablemasters').dataTable( {
                    "bProcessing": true,
                    "ajax": 'post.php',
                    dom: 'Bfrtip',
                    buttons: ['csv', 'excel', 'pdf'],
                    responsive: true,
                    "columnDefs": [ {"targets": [0],"visible": false,"searchable": false},
                                                {width: 100, targets: 4}]
                });
        });
</script>
</body>
</html>

// post.php

<?php
    $array = [['Country Sno1','Country Code1','Country Name1','Description1','Action1'],
    ['Country Sno2','Country Code2','Country Name2','Description2','Action2'],
    ['Country Sno3','Country Code3','Country Name3','Description3','Action3'],
    ['Country Sno4','Country Code4','Country Name4','Description4','Action4']];
    $data = ['data'=>$array];
    echo json_encode($data);
?>