How to display information in another PHP Page - php

Question

I am having trouble with a mini shopping cart. I have created the mini shopping cart and when a product is added it goes into the Basket page. However, i want to create a checkout page. How do i grab the products in the basket and put it in a checkout page.
So For example, the check out page will look like this
ITEM NAME, ITEM MODEL, ITEM PRICE
TOTAL OF ITEMS
CHECKOUT BUTTON (links to a payment system)
This is my Basket.php code:
<?php
$bikecode = $_GET['id']; //the product id from the URL
$action = $_GET['action']; //the action from the URL
if($bikecode && !productExists($bikecode)) {
die("Product Doesn't Exist");
}
switch($action) { //decide what to do
case "add":
$_SESSION['cart'][$bikecode]++; //add one to the quantity of the product with id $bikecode
break;
case "remove":
$_SESSION['cart'][$bikecode]--; //remove one from the quantity of the product with id $bikecode
if($_SESSION['cart'][$bikecode] == 0) unset($_SESSION['cart'][$bikecode]); //if the quantity is zero, remove it completely (using the 'unset' function) - otherwise is will show zero, then -1, -2 etc when the user keeps removing items.
break;
case "empty":
unset($_SESSION['cart']); //unset the whole cart, i.e. empty the cart.
break;
}
if($_SESSION['cart']){
echo "<table width=\"100%\">";
foreach($_SESSION['cart'] as $bikecode => $quantity) {
$sql = sprintf("SELECT BikeCode, Model, Price FROM Bike WHERE BikeCode = '%s';", $bikecode);
$result = mysqli_query($con, $sql);
if(mysqli_num_rows($result) > 0) {
list($bikecode, $model, $price) = mysqli_fetch_row($result);
$cost = $quantity * $price;
$total = $total + $cost;
echo "<tr><th>BikeCode:</th><th>Model:</th><th>Quantity:</th><th>Price:</th></tr>";
echo "<tr>";
echo "<td align=\"center\">$bikecode</td>";
echo "<td align=\"center\">$model</td>";
echo "<td align=\"center\">$quantity X</td>";
echo "<td align=\"center\">£$cost</td>";
echo "</tr>";
}
}
echo "<tr>";
echo "<td colspan=\"3\" align=\"right\">Total</td>";
echo "<td align=\"right\">£$total</td>";
echo "</tr>";
echo "<tr>";
echo "<td colspan=\"4\" align=\"right\">Empty Cart</td>";
echo "</tr>";
echo "</table>";
}else{
echo "You have no items in your shopping cart.";
}
function productExists($bikecode) {
$sql = sprintf("SELECT * FROM Bike WHERE BikeCode = '%s';", $bikecode);
return mysqli_num_rows(mysqli_query($con, $sql)) > 0;
}
?>

Answer 1

As long as you have a session_start(); on top of every page you should be able to use the exact same foreach loop as you do in this piece of coding. The session with the information would just be carried over to the next page.

Answer 2

Assume you have a page called test.php with the following code:
<?php
session_start();
$_SESSION['test'] = 1;
echo $_SESSION['test'];
?>
Then to access the test variable in othertest.php page,simply do the following:
<?php
session_start();
echo $_SESSION['test']; ?>

Answer 3

You forgot to add session_start() to the top of your php file. I recommend adding session_start() to a separate file and then including that file in each of the php pages that uses session variables.