REST Api

<?php  $con=new mysqli('localhost','root','','items'); if(!$con){ echo "not succeeded"; } if(!empty($_GET['id'])){ $id=$_GET['id']; $sql = "SELECT * FROM products where id='$id'";        $result = $con->query($sql); if ($result->num_rows > 0) {     while($row = $result->fetch_assoc()) {     header('Content-Type:...