How to allow a user to change the quantity of a product in a shopping cart?

callisto11 · July 23, 2008

Hi everyone ???,

Im very new to php and mysql and this is my first ever demo website that Im building. To keep the long story short, what I really need help with is that below is a copy of my shopping cart script, I want my user to able to change the quantity of the product that they have added to the shopping cart once they look into their shopping cart. I dont mind if a example can be shown, so that I can understand how Im surpose to create or add the code to my shopping cart code.

Thank you

Callisto11

My shopping cart code:

<?php

session_start(); //at the top of all pages. sessions it stores the data about the user in the web server.

//the session stores session variables for each user,when a session is started the client

//is given a session identifier

if (isset($_SESSION['cart'])) {

?>

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

<head>

<!--

.style1 {color: #000000}

.style7 {

font-size: 12px;

color: #000000;

}

.style8 {

font-size: 12px;

font-weight: bold;

color: #000000;

}

.style12 {

font-size: 14px;

color: #000000;

}

.style19 {font-size: 14px; color: #000000; font-weight: bold; }

-->

</style>

</head>

<body>

<div >

<p><strong>Shopping Cart</strong></p>

</div>

<tr>

<th width="5%"> <span class="style7">STYLE NUMBER</span></th>

<th width="6%"> <span class="style7">DETAILS</span></th>

<th width="6%"> <span class="style8">QUANTITY</span></th>

<th width="7%"> <span class="style8">PRICE (per cartoon) </span></th>

<?php

foreach ($_SESSION['cart'] as $key => $general_cartoon) {

?>

</tr>

<tr>

<?php $quantity =$_SESSION['cart'][$key]['quantity'];?>

<td><a href="removefromcart.php?cartoon_id=<?php echo $_SESSION['cart'][$key]['cartoon_id'];?>&location=<?php echo $_SERVER['PHP_SELF'];?>">[REMOVE]</a></td>

</tr>

<?php }?>

</table>

<p>

<?php }

else { ?>

No cartoon chosen yet

<?php }

?>

</p>

</form>

</form>

</form>

</div>

<br />

</div>

ignace · July 23, 2008

well, this actually depends on your application logic

you can use up and down arrows to increase or decrease your quantity or a text field to type the quantity and then update their cart, and those containing the value zero, are removed from the cart.

using the arrows you could use a link with the a query like:

<a href="updatecart.php?customer=56&item=3&quantity=3">increase quantity</a>

<a href="updatecart.php?customer=56&item=3&quantity=1">decrease quantity</a>

updatecart.php would then validate, filter the input and execute a query along the lines of:

update cart set quantity = '$quantity' where item = '$item' and customer = '$customer'

something along these lines

or with the text field:

in your php:

get all items for the customers cart, go over all items and see if the id exists in the $_POST variable, if so update the quantity set in value

callisto11 · July 23, 2008

To ignace,

If I went with your second choice, of a text field, would i apply the example you gave to my above code (shopping cart).

Also what do you mean by 56 and 3 in the example you gave (the text example).

Thank you

Callisto11

(P.s: Im quite slow in understanding things)

callisto11 · July 23, 2008

Hi everyone ???,

Im very new to php and mysql and this is my first ever demo website that Im building. To keep the long story short, what I really need help with is that below is a copy of my shopping cart script, I want my user to able to change the quantity of the product that they have added to the shopping cart once they look into their shopping cart. I dont mind if a example can be shown, so that I can understand how Im surpose to create or add the code to my shopping cart code.

Thank you

Callisto11

My shopping cart code:

<?php

session_start(); //at the top of all pages. sessions it stores the data about the user in the web server.

//the session stores session variables for each user,when a session is started the client

//is given a session identifier

if (isset($_SESSION['cart'])) {

?>

<!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">

<head>

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

<title></title>

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

<style type="text/css">



</style>

</head>

<body>

<div id="top_menu"></div>

<div id="main_content">

<div id="top_banner">

<a href="index.html"><img src="images/roar.jpg" width="391" height="130" alt="home" title="logo" border="0" class="logo" /></a> </div>

<div >

<div class="title style1">

<p><strong>Shopping Cart</strong></p>

</div>

<div class="content_text">

<table width="40%" border="1" bordercolor="black" bgcolor="">

<tr>

<th width="5%"> <span class="style7">STYLE NUMBER</span></th>

<th width="6%"> <span class="style7">DETAILS</span></th>

<th width="6%"> <span class="style8">QUANTITY</span></th>

<th width="7%"> <span class="style8">SIZE </span></th>

<th width="7%"> <span class="style8">PRICE (per cartoon) </span></th>

<th width="8%"> -</th>

<?php

foreach ($_SESSION['cart'] as $key => $general_cartoon) {

?>

</tr>

<tr>

<td><span class="style19"><?php echo $_SESSION['cart'][$key] ['cartoon_id']; ?></span></td>

<td><span class="style19"><?php echo $_SESSION['cart'][$key] ['title']; ?></span></td>

<td><span class="style19"><?php echo $_SESSION['cart'][$key] ['quantity'];?></span></td>

<td><span class="style19"><?php echo $_SESSION['cart'][$key] ['size'];?></span></td>

<td><span class="style19"><?php echo $_SESSION['cart'][$key] ['fee'];?></span></td>

<?php $quantity =$_SESSION['cart'][$key]['quantity'];?>

<td><a href="removefromcart.php?cartoon_id=<?php echo $_SESSION['cart'][$key]['cartoon_id'];?>&location=<?php echo $_SERVER['PHP_SELF'];?>">[REMOVE]</a></td>

</tr>

<?php }?>

</table>

<p>

<?php }

else { ?>

No cartoon chosen yet

<?php }

?>

</p>

<p> </p>

<form action="rmgallery.php" method="get">

<input name="back" type="submit" value="BACK TO GALLERY" title=" Takes you back to the gallery page."/>

</form>

<form action= "checkoutlogin.php" method="get">

<input nane= "get" type="submit" value="GENERAL ORDER" title="A general order will allow you to purchase the cartoons in your shopping cart." />

</form>

<form action="questionform.php" method="get">

<input name="get" type="submit" value="PERSONAL ORDER" title="A personal order will allow you to give a description of details you would like in your cartoon." />

</form>

<p> </p>

<p> </p>

</div>

<div class="content_text"></div>

<div class="title"></div>

<div class="content_text"><br />

<br />

</div>

Sign In

How to allow a user to change the quantity of a product in a shopping cart?

Recommended Posts

callisto11

Link to comment

Share on other sites

ignace

Link to comment

Share on other sites

callisto11

Link to comment

Share on other sites

callisto11

Link to comment

Share on other sites

Join the conversation

Browse

Activity

Important Information