Delete Data Using PHP Mysqli

<?php
if(isset($_GET['id']))
{
$con=mysqli_connect("localhost","root","root","example") or die(mysqli_error());

 
          $query= 'delete from student_info where id="'.$_GET['id'].'" ' ;
          $result = mysqli_query($con,$query);
         // $row = mysqli_fetch_array($result);
  if($result)
                          {
 echo '<script type="text/javascript">';
 echo " alert('Record Deleted');";
 echo 'window.location.href = "view.php";';
 echo '</script>';
 
                      }

}


 
?>