How do I clear the form data after it has been inserted into database

Question

How can I clear the form data, after the data has been submitted and inserted into the database? So the user cannot press back and refresh to reenter data after it has been submitted, because at the moment they can. Also please ignore the MYSQL root login, it is just for testing purposes.

This is my code

<?php
session_start();
 if (isset($_POST['sub'])) {
$host='localhost';
$user='root';
$pass='';
$db='theatre_booking';

$con=mysqli_connect($host,$user,$pass,$db);

$row = $_POST['row'];
$_SESSION["row"]=$row;  

$zone = $_POST['zone'];
$_SESSION["zone"]=$zone;

$quantity = $_POST['qty'];
$_SESSION["qty"]=$quantity;

$quantity = $_POST['quotation'];
$_SESSION["quotation"]=$quantity;


$sql="INSERT INTO booking(PerfDate, PerfTime, Name, Email, RowNumber) 
VALUES (
    '{$_SESSION['date']}',
    '{$_SESSION['time']}',
    '{$_SESSION['name']}',
    '{$_SESSION['email']}',
    '{$_SESSION['row']}')";

    if ($con->query($sql) === TRUE) {
    echo "Booking successful";
} else {
    echo "Error: " . $sql . "<br>" . $con->error;
    }

}






?>

<!------------------------------------------------------------------------------------>
<DOCTYPE! html>
<html>
<head>
    <meta charset="uft-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"">
    <meta name= "viewport" content="width=device-width, initial-scale=1.0"> 
    <link href="style/styles.css" type="text/css" rel="stylesheet">


</head>
<body>

        <h2 id="siteTitle">Westend</h2>
        <nav>
            <ul class="main_menu">
                <li><a href="index.php">Home</a></li>
                <li><a href="booking.php" >Booking</a></li>
            </ul>
        </nav>

    <!--Image shown in the background after booking is confirmed-->
    <div><img src="images/curtains.jpg" id="open"/> 
        <!--Booking confirmation message the user sees-->
        <div id="process">
            </br>Hi <?php echo "'".$_SESSION['name']."'"; ?></br>
            Your tickets have been booked for <?php echo "'".$_SESSION['production']."'";?>  
            </br>Playing on <?php echo "'".$_SESSION['date']."'";?> at <?php echo "'".$_SESSION['time']."'";?> </br>
            You are in <?php echo $_POST["zone"];?> in row <?php echo $_POST["row"];?></br>
            The total cost is £<?php echo $_POST["quotation"];?></br>
            Confirmation of your booking has been sent to: <?php echo "'".$_SESSION['email']."'"; ?></br>
            </br>
            Enjoy the show!
            </br>
    </div>
</div>


<!--Footer-->

<footer>
    <p class="pageBottom">&copy Westend 2015</p>
</footer>




</body>
</html>

Answer 1

I'll answer here so can i add some code

if(isset($_POST["row"] && !empty($_POST["row"]){

   $sql="INSERT INTO booking(PerfDate, PerfTime, Name, Email, RowNumber) 
   VALUES (
   '{$_SESSION['date']}',
   '{$_SESSION['time']}',
   '{$_SESSION['name']}',
   '{$_SESSION['email']}',
   '{$_SESSION['row']}')";

  if ($con->query($sql) === TRUE) {
     echo "Booking successful";
  } else {
    echo "Error: " . $sql . "<br>" . $con->error;
  }
}

How do I clear the form data after it has been inserted into database

Question

1 answers

solution1
1 ACCPTED 2015-12-06 13:29:53

How do I clear the form data after it has been inserted into database

Question

1 answers

solution1 1 ACCPTED 2015-12-06 13:29:53

solution1
1 ACCPTED 2015-12-06 13:29:53