<?php include("conn.php");//add connection to the php page if(isset($_POST['deletedata'])) { $bid = $_POST['delete_id']; $sql = "DELETE FROM squash_court_booking WHERE Booking_ID = '$bid'"; $result = mysqli_query($conn, $sql); if($result) { echo '<script> alert("Data Deleted!");</script>'; header("location:manager_squash_court_booking_management.php"); } else { echo '<script> alert("Data Not Deleted!");</script>'; } } ?>