<?php
session_start(); ob_start();
include('lib/connection.php');

$sql = $db->query("SELECT sn,id FROM user ");
$row = mysqli_fetch_assoc($sql);
echo json_encode($row);

// foreach ($sql as $row) {
//  $x[] = $row;
// };
// echo json_encode($x[5]);
// $cid = 23;
//  echo in_array($cid, $x) ? 'YES' : 'NO';
?>
<iframe src="https://player.vimeo.com/video/874053749" width="600" height="360" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe>