hi! What does it mean when you reference a separate non-session variable right next to a Session Variable in brackets?
Like
if(isset($_SESSION['cart']['new]'])){
$_SESSION['cart'][$new]++;
} else{
$_SESSION['cart'][$new]=1;
or
if(isset($_POST['save'])) {
foreach($_SESSION['cart'] as $isbn=> $qty) {
if($_POST[$isbn] == '0') {
unset($_SESSION['cart'][$isbn]);
} else{
$_SESSION['cart'][$isbn]=$_POST[$isbn];
}
or
if(isset($_SESSION['cart']['new]'])){
$_SESSION['cart'][$new]++;
} else{
$_SESSION['cart'][$new]=1;
}
Here’s the example code where it came from:
<?php
/**
* Created by PhpStorm.
* User: John
* Date: 3/21/14
* Time: 11:45 AM
* show_cart.php
*/
<?$php_errormsg
include('book_sc_fns.php');
//The shopping cart needs sessions, so start one
session_start();
@$new=$_GET['new'];
if($new) {
//new item selected
if(!isset($_SESSION['cart'])) {
$_SESSION['cart'] = array();
$_SESSION['items']= 0;
$_SESSION['total price'] ='0.00';
}
if(isset($_SESSION['cart']['new]'])){
$_SESSION['cart'][$new]++;
} else{
$_SESSION['cart'][$new]=1;
}
$_SESSION['total_price']= calculate_price($_SESSION['cart']);
$_SESSION['items']= calculate_items($_SESSION['cart']);
}
if(isset($_POST['save'])) {
foreach($_SESSION['cart'] as $isbn=> $qty) {
if($_POST[$isbn] == '0') {
unset($_SESSION['cart'][$isbn]);
} else{
$_SESSION['cart'][$isbn]=$_POST[$isbn];
}
}
$_SESSION['total_price'] = calculate_price($_SESSION['cart']);
$_SESSION['items'] = calculate_items($_SESSION['cart']);
}
do_html_header("Your shopping cart");
if(($_SESSION['cart'])&& (array_count_values($_SESSION['cart']))){
display_cart($_SESSION['cart']);
} else {
echo"<p>There are no items in your cart</p></hr>";
}
$target = "index.php";
//if we have just added an item to the cart, continue shopping in that category
if($new) {
$details= get_book_details($new);
if($details['catid']) {
$target = "show_cat.php?catid =".$details['catid'];
}
}
display_button($target, "continue-shopping", "Continue Shopping");
//use this if SSL is set up
//path = $_SERVER['PHP_SELF'};
//$server = $-SERVER['SERVER_NAME'];
//path = str_replace('show_cart.pjp', '',$path;
//display_button(https://".server.$path."checkout.php", "go-to-checkout", "Go To Checkout");
//if no SSL use below code
display_button("checkout.php", go-to-checkout", "Go to Checkout");
do_html_footer();
?>
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