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Hi,
I am creating a shopping basket and I am having problems with the delete_item function. It removes the items in the basket fine but when you click refresh on the browser it removes another from the basket and so forth.
I realise that it is because the method is being called again but wont the fact that $productID being passed in is different from that that was deleted.
Is it possible to validate the $productID before allowing to delete a product?
Neil
[php]
session_start();
header("Cache-control: private");
?>
<script type="text/javascript">
<!-- Hide script from old browsers -->
function productEnlarge(htmlPage, downScroll)
{
textWindow = window.open(htmlPage, "productEnglarge", "width=400, height=350, scrollbars=yes")
textWindow.focus()
setTimeout("textWindow.scroll(0, " + downScroll + ")", 1000)
}
if (document.layers)
{
document.captureEvents(Event.MOUSEDOWN)
}
document.onmousedown = captureMousedown
function captureMousedown(evt)
{
if (evt)
{
mouseClick = evt.which
}
else
{
mouseClick = window.event.button
}
if (mouseClick == 2 || mouseClick == 3)
{
alert("Right mouse click disabled for this page")
return false
}
}
// End hiding script from old browsers
</script>
<SCRIPT language=JavaScript>
function confirmDelete() {
if (confirm("Are you sure you would you like to clear your basket?")==false)
return false;
else
return true;
}
</script>
<?php
if (isset($_GET["cmd"]))
{
$productID = $_GET["productID"];
$title = $_GET["title"];
$description = $_GET["description"];
$image2 = $_GET["image2"];
}
$basket = new basket();
if (isset($_GET['deletecart']) && $_GET['deletecart'])
{
$basket -> delete_cart();
$empty = "<br/><p>Your sample basket has been emptied</p>";
$empty .= "<span class=\"pageLinks\"><p><a href=\"products1.php\">Continue Browsing</a></p></span>";
}
if (isset($_GET['deleteitem']) && $_GET['deleteitem'])
{
$basket -> delete_item($_GET['productID']);
}
if ($_GET["cmd"] == "addtocart")
{
$basket -> add_item($_GET["productID"], $_GET["title"], $_GET["description"], $_GET["image2"]);
}
?>
<?
class basket
{
function basket ()
{
if (!isset($_SESSION["item_count"]))
$_SESSION["item_count"] = 0;
}
function add_item($productID, $title, $description, $image2)
{
if ($_SESSION["item_count"] > 0)
{
$found=false;
for($i=0; $i < $_SESSION["item_count"]; $i++)
{
if ($_SESSION["items"][$i][0] == $productID) {
$found=true;
}
}
if (!$found)
{
$_SESSION["items"][$_SESSION["item_count"]] = array($productID, $title, $description, $image2);
$_SESSION["item_count"]++;
}
}
else
{
$_SESSION["items"][0] = array($productID, $title, $description, $image2);
$_SESSION["item_count"] = 1;
}
}
function show_cart()
{
include("/forum/dbProductsConnect.html");
if (isset($_SESSION["item_count"]) && $_SESSION["item_count"] > 0)
{
echo "<br/><p>Please find your sample basket below. <br/><br/>You can find instructions for using the sample basket <span class=\"pageLinks\"><a href=\"sampleBasketHelp.php\">here</a></span></p>";
echo "<table width=\"520\">";
echo "<tr><td style=\"border-bottom-width:2px; border-bottom-style:dotted; border-left-width:2px; border-left-style:dotted; border-top-width:2px; border-top-style:dotted\" align=\"center\"><b><p>Product</p></b></td><td align=\"center\" style=\"border-bottom-width:2px; border-bottom-style:dotted; border-top-width:2px; border-top-style:dotted\"><b><p>Product Image</p></b></td><td align=\"center\" style=\"border-bottom-width:2px; border-bottom-style:dotted; border-right-width:2px; border-right-style:dotted; border-top-width:2px; border-top-style:dotted\"><b><p>Remove</p></b></td></td></tr>";
echo "<tr><td style=\"border-bottom-width:2px; border-bottom-style:dotted; border-left-width:2px; border-left-style:dotted\" align=\"center\"><p class=\"basketSubs\">Click for product page</p></td><td align=\"center\" style=\"border-bottom-width:2px; border-bottom-style:dotted\"><p class=\"basketSubs\">Click to Enlarge</p></td><td align=\"center\" style=\"border-bottom-width:2px; border-bottom-style:dotted; border-right-width:2px; border-right-style:dotted\"><p class=\"basketSubs\">Click to Remove</p></td></tr>";
for($i=0; $i<$_SESSION["item_count"]; $i++)
{
$sql = "SELECT * FROM productlist where productID=". $_SESSION["items"][$i][0]."";
$result = mysql_query($sql);
while($row = mysql_fetch_array($result))
{
$postedTitle = $row["title"];
$postedDescription = $row["description"];
$postedPrintArea = $row["printarea"];
$desc2 = $row["desc2"];
$postedLeadTime = $row["leadtime"];
$postedFastTrack = $row["fasttrack"];
$postedCategory = $row["category"];
$postedMinQuantity = $row["minquantity"];
$imageDisplay = $row["image2"];
$enlargeImage = $row["image2"];
$productID = $row["productID"];
$postedArtwork = $row["artwork"];
$sample = $row["sample"];
echo "<td style=\"border-bottom-width:2px; border-bottom-style:dotted; border-left-width:2px; border-left-style:dotted\" align=\"center\"><p><span class=\"pageLinks\"><a href='/forum/product_cmd_product_ampproductID_productID_ampcategory_postedCategory_amptitle_postedTitle_ampdescription_postedDescription_ampimage2_imageDisplay_ampprintarea_postedPrintArea_ampminquantity_postedMinQuantity_ampfasttrack_postedFastTrack_ampleadtime_postedLeadTime_ampdesc2_desc2_ampartwork_postedArtwork_ampsample_sample.html'>".$_SESSION["items"][$i][1]."</a></span></span></p></td>";
$image = $_SESSION["items"][$i][3];
$imageExists = @GetImageSize($imageDisplay);
if($imageExists)
{
echo "<td style=\"border-bottom-width:2px; border-bottom-style:dotted\" align=\"center\"><a href=\"Javascript:productEnlarge('/forum/productEnlarge_enlargeImage_imageDisplay.html')\"><img width=\"70\" border='0' height=\"70\" alt='Click to enlarge' src=\"$imageDisplay\"/></a></td>";
}
else
{
echo "<td style=\"border-bottom-width:2px; border-bottom-style:dotted\" align=\"center\"><img src=\"images/noImage.gif\" width=\"100\" border=\"0\"/></td>";
}
}
echo "<td style=\"border-bottom-width:2px; border-bottom-style:dotted; border-right-width:2px; border-right-style:dotted\" align=\"center\"><span class=\"pageLinks\"><p><a href=\"/forum/sampleBasket_deleteitem_1_ampproductID_.html".$_SESSION["items"][$i][0]."\">";
echo "Remove</a></p></span></td>";
$physicalTitles[$i] = $_SESSION["items"][$i][1];
$virtualTitles[$i] = $_SESSION["items"][$i][1];
echo "</tr>";
}
$numElements = count($physicalTitles);
$basketItems = "";
$basketItems2 = "";
for($counter=0; $counter < $numElements; $counter++)
{
$basketItems .= $physicalTitles[$counter] . "\n";
$basketItems2 .= $physicalTitles[$counter] . "<br/>";
}
echo "<tr><td><br/><span class=\"pageLinks\"><p><a href=\"/forum/sampleBasket_deletecart_1.html" onclick='return confirmDelete()'>Clear Basket</a></p></span><span class=\"pageLinks\"><p><a href=\"products1.php\">Continue Browsing</a></p></span></td>";
echo "<td align=\"center\" colspan=\"3\"><br/><br/>";
echo "<form action=\"sampleSendProcessPS.php\" method=\"post\">";
echo "<input type='hidden' name='basketItems' value='$basketItems'>";
echo "<input type='hidden' name='basketItems2' value='$basketItems2'>";
echo "<input name=\"submit\" class=\"buttonText\" type=\"submit\" value=\"Request Product Sample\">";
echo "</form>";
echo "<form action=\"sampleSendProcessVS.php\" method=\"post\">";
echo "<input type='hidden' name='basketItems' value='$basketItems'>";
echo "<input type='hidden' name='basketItems2' value='$basketItems2'>";
echo "<input name=\"submit\" class=\"buttonText\" type=\"submit\" value=\" Request Virtual Sample \">";
echo "</form>";
echo "</td></tr>";
echo "</table>";
}
else
{
echo "<p style=\"margin-top:20px\">There are currently no samples in your basket</p>";
echo "<span class=\"pageLinks\"><p><a href=\"products1.php\">Add Products</a></p></span>";
echo "<p>You can find instructions for using the sample basket <span class=\"pageLinks\"><a href=\"sampleBasketHelp.php\">here</a></span></p>";
}
}
function delete_item($productID)
{
$pos=0;
for($i=0; $i < $_SESSION["item_count"]; $i++)
{
if ($_SESSION["items"][$i][0] != $productID)
{
$_SESSION["items"][$pos] = $_SESSION["items"][$i];
$pos++;
}
}
$_SESSION["item_count"]--;
}
function delete_cart()
{
session_destroy();
}
}
?>
<?php
function get_include_contents($filename)
{
if (is_file($filename))
{
ob_start();
include $filename;
$contents = ob_get_contents();
ob_end_clean();
return $contents;
}
return false;
}
$include1 = get_include_contents('includes/topMenu.inc');
$include2 = get_include_contents('includes/sideMenu1.inc');
$include3 = get_include_contents('includes/footer.inc');
?>
<?php
echo "$include1";
echo "<html>";
echo "<head>";
echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"css/styles.css\"/>";
echo "<meta http-equsiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\">";
echo "<title>Sweet Concepts - Taste The Difference</title>";
echo "</head>";
echo "<body>";
echo "<table>";
echo "<tr>";
echo "<td style=\"vertical-align:top\">";
echo "$include2";
echo "</td>";
echo "<td width=\"520\" style=\"vertical-align:top\">";
echo "<img src=\"images/banners/sampleBasket.gif\"/>";
echo "<table style=\"margin-bottom:80px\">";
echo "<tr>";
echo "<td>";
if (isset($empty))
{
echo $empty;
}
else
{
$basket -> show_cart();
}
echo "</td>";
echo "</tr>";
echo "</table>";
echo "</td>";
echo "</tr>";
echo "</table>";
echo "</body>";
echo "</html>";
echo "$include3";
[/php]
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Sorry its very hard to read all the code...do you create checkbox whose values are equal to product ids in session...based on how many checkbox he selecte corresponding product ids will be unset..i have this algorithm in my carts and it works perfectly.
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For your doubts and ideas please see www.desss.com
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nyoung2005
