Arrays in session vars mysteriously disappearing? - HTML Forums

Sawtooth500 · 10-12-2009, 07:41 PM

Ok, so go to http://dev.heatedblades.com/vehicles.php (fyi there is absolutely no PHP on this page).

Add a product to the cart, any product. The action page for the form is cart_add.php
Source for cart_add.php:

PHP Code:


			
<?php

session_start();



switch($_GET['product']){

    case 'complete_set':

        $_SESSION[] = array(1, 49.95, 7.95, 'Heat Flexx Complete Set', $_GET['driver'], $_GET['passenger']); //1 is the quantity

    break;

    case 'single_blade':

        $_SESSION[] = array(1, 24.95, 7.95, 'Heat Flexx Single Blade Only', $_GET['blade_size']);

    break;

    case 'wiring_kit':

        $_SESSION[] = array(1, 6.95, 4, 'Heat Flexx Wiring Kit Only');

    break;

}

echo print_r($_SESSION);

header("Location: ../cart.php");

?>

Ok, so as you can see with the print_r function the array populated correctly. The redirect to the cart page didn't work because of the print_r output, so hit back and click on "View Cart" in the navbar.

Source for cart.php:

PHP Code:


			
<?php

session_start();

print_r($_SESSION);



switch($_POST['submit']){

    case 'empty':

        session_unset();

    break;

    case 'update':

        for($i = 1; $i < $_SESSION['cartnext']; ++$i){

            if($_SESSION[$i]){

                $quant = 'quantity' . $i;

                if($_POST[$quant] != $_SESSION[$i][0] && is_numeric($_POST[$quant])) $_SESSION[$i][0] = number_format($_POST[$quant], 0);

                if(!$_SESSION[$i][0] || $_POST['remove' . $i]) unset($_SESSION[$i]);

            }

        }

    break;

    case 'checkout':

        header("Location: https://" . $_SERVER['SERVER_NAME'] . "/customer_info.php");

        exit();

    break;

}



?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<!-- InstanceBegin template="/Templates/main_template.dwt.php" codeOutsideHTMLIsLocked="false" -->

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<!-- InstanceBeginEditable name="doctitle" -->

<title>Heated Blades for Windshiled Wipers</title>

<!-- InstanceEndEditable -->

<link href="css/style.css" rel="stylesheet" type="text/css" />

<!-- InstanceBeginEditable name="head" -->

<style type="text/css">

<!--

form {

    margin: 0px;

}

-->

</style>

<!-- InstanceEndEditable -->

</head>

<body onload="MM_preloadImages('images/nav-gradient-overlay.png');MM_preloadImages('/images/order_on.png')">

<div class="trackers">

  <script type="text/javascript">

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");

document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));

</script>

  <script type="text/javascript">

try {

var pageTracker = _gat._getTracker("UA-11037093-1");

pageTracker._trackPageview();

} catch(err) {}</script>

  <noscript>

  <div style="display:inline;"> <img height="1" width="1" style="border-style:none;" alt="" src="http://www.googleadservices.com/pagead/conversion/1031538361/?value=30.0&amp;label=bll_CI2iqwEQuY3w6wM&amp;guid=ON&amp;script=0"/> </div>

  </noscript>

</div>

<div class="mainstripe">

  <div class="container">

    <table width="100%" border="0" cellspacing="0" cellpadding="0">

      <tr>

        <td><img src="images/heat-flexx-logo.png" width="310" height="175" alt="Heated Blades for Windshiled Wipers" /></td>

        <td><img src="images/blade-comparison.jpg" alt="Heat Flexx Blade Comparison" width="469" height="175" class="sideborder" /></td>

      </tr>

    </table>

  </div>

</div>

<div class="navstripe stripeborder">

  <div class="container blackback" align="center">

    <div class="nav-item" style="width:111px;""><a href="index.php">Home</a></div>

    <div class="nav-item"><a href="vehicles.php">Vehicle List</a></div>

    <div class="nav-item"><a href="instructions.php">Instructions</a></div>

    <div class="nav-item"><a href="contact.php">Contact</a></div>

    <div class="nav-item"><a href="resellers.php">Resellers</a></div>

    <div class="nav-item"><a href="/fleet.php">Fleet</a></div>

    <div class="nav-item" style="width:112px"><a href="/cart.php">View Cart</a></div>

    <div class="clear-both"></div>

  </div>

</div>

<div style="background-color:#FFFFFF">

  <div class="container">

    <div class="main"><!-- InstanceBeginEditable name="Main_Edit" -->

    <?php

    if(!$_SESSION['cartnext']) echo '

      <div style="min-height:400px">

        <h1 align="center">Your cart is currently empty.</h1>

        <h2 align="center" style="margin-bottom:0px"><a href="/vehicles.php">Return to Vehicle List</a></h2>

      </div>';

    else { echo '

      <h1 align="center">HeatedBlades.com Shopping Cart</h1>

      <form action="" method="post" name="cartform">

        <table width="781" border="0" cellspacing="0" cellpadding="10">

          <tr class="header-text">

            <td align="center" width="461">Product</td>

            <td align="center" width="80">Quantity</td>

            <td align="center" width="80">Remove?</td>

            <td align="center" width="80">Price</td>

          </tr>';

          $shipping = 0;

          for($i = 1; $i < $_SESSION['cartnext']; ++$i){

            if($_SESSION[$i]){

                echo '

                <tr>

                  <td>';

                if($_SESSION[$i][3] == 'Heat Flexx Complete Set' || $_SESSION[$i][3] == 'Heat Flexx Single Blade Only'){

                    echo '

                    <table width="461" border="0" cellspacing="0" cellpadding="0">

                    <tr>

                      <td><strong>' . $_SESSION[$i][3] . '</strong></td>

                      <td align="right">';

                    switch($_SESSION[$i][3]){

                        case 'Heat Flexx Complete Set':

                        echo 'Driver: ' . $_SESSION[$i][4] . '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Passenger: ' . $_SESSION[$i][5];

                        break;

                        case 'Heat Flexx Single Blade Only':

                        echo 'Blade Size: ' . $_SESSION[$i][4];

                        break;

                    }

                    echo '</td>

                    </tr>

                      </table>';

                }

                else {

                    echo '<strong>' . $_SESSION[$i][3] . '</strong>';

                }

                echo '

                </td>

                <td align="center"><input name="quantity' . $i . '" type="text" size="2" maxlength="2" value="' . $_SESSION[$i][0] . '" /></td>

                <td align="center"><input name="remove' . $i . '" type="checkbox" /></td>

                <td align="center">$' . number_format($_SESSION[$i][1], 2) . '</td>

                  </tr>';

                $shipping += $_SESSION[$i][2];

            }

          }

          echo '

          <tr class="header-text">

            <td align="right" colspan="3">Sub-Total:</td>

            <td></td>

          </tr>

          <tr>

            <td colspan="2"><em>*Illinois Residents will have 6.25% Sales Tax added at checkout.</em></td>

            <td align="right" style="font-size:large">Shipping:</td>

            <td style="font-size:large"></td>

          </tr>

          <tr class="header-text">

            <td align="right" colspan="3">Total:</td>

            <td></td>

          </tr>

          <tr>

            <td colspan="4" align="right"><table border="0" cellspacing="0" cellpadding="0">

                <tr>

                  <td><input value="checkout" name="submit" type="image" onmouseover="this.src=\'images/checkout_on.png\'" onmouseout="this.src=\'images/checkout_off.png\'" src="images/checkout_off.png" alt="Heated Blades" /></td>

                  <td width="20"></td>

                  <td><input value="empty" name="submit" type="image" onmouseover="this.src=\'images/empty_cart_on.png\'" onmouseout="this.src=\'images/empty_cart_off.png\'" src="images/empty_cart_off.png" alt="Heated Blades" /></td>

                  <td width="20"></td>

                  <td><input value="update" name="submit" type="image" onmouseover="this.src=\'images/update_cart_on.png\'" onmouseout="this.src=\'images/update_cart_off.png\'" src="images/update_cart_off.png" alt="Heated Blades" /></td>

                </tr>

              </table></td>

          </tr>

          <tr>

            <td colspan="4" align="center">If you want to add more blades for your other cars that are different lengths, <a href="/vehicles.php">return to the vehicles page</a> and add to cart again with your other blade sizes. Changing your quanity will get you more blades of the same sizes.</td>

          </tr>

        </table>

      </form>';

    }

      ?>

      <!-- InstanceEndEditable --></div>

    <div class="clear-both"></div>

  </div>

</div>

<div class="footerstripe stripeborder">

  <div class="container"> </div>

</div>

<div class="footstripe">

  <div class="container" align="center" style="font-weight:bold; font-size:small">

    <table border="0" cellspacing="0" cellpadding="0">

      <tr>

        <td height="75">&copy;2009 HeatedBlades.com All Rights Reserved. </td>

      </tr>

    </table>

  </div>

</div>

</body>

<!-- InstanceEnd -->

</html>

So as you can see print_r is almost the first thing on this page. But the array I've stored in my session has magically disappeared! No matter what I try, the array always disappears. Why?

Vege · 10-13-2009, 03:22 AM

Sessions cannot have numeric (first level) keys.

Sawtooth500 · 10-13-2009, 03:49 AM

Thank you for clearing up a lot of frustration.