Why does my code empty $_SESSION basket everythime it adds a new product

Question

0.00/5 (No votes)

See more:

bit hard to explain for me but I will try my best: I'm making a shopping cart in php with array's and sessions. but my shopping cart will always empty the $_SESSION['basket']; when a user presses add to cart button. why is this happening??

index.php this is where all the items are displayed.

<!-- session_start();  geeft error a sessin has already started -->
<?php 
 if(isset($_SESION['basket'])){
     $_SESSION['basket'] = array();
 }
error_reporting(E_ALL);
ini_set('display_errrors', '1');
?>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
        <meta name="description" content="" />
        <meta name="author" content="" />
        <title>Shop Homepage - Start Bootstrap Template</title>
        <!-- Favicon-->
        <link rel="icon" type="image/x-icon" href="assets/favicon.ico" />
        <!-- Bootstrap icons-->
        <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.5.0/font/bootstrap-icons.css" rel="stylesheet" />
        <!-- Core theme CSS (includes Bootstrap)-->
        <link href="css/styles.css" rel="stylesheet" />
        <link href="css/stylecart.css" rel="stylesheet" />
        <script src="js/scripts.js" async></script>

    </head>
    <style>
        body {
        font-family: Arial, Helvetica, sans-serif;
        font-size: 20px;
        }

        #myBtn {
        display: none;
        position: fixed;
        bottom: 20px;
        right: 30px;
        z-index: 99;
        font-size: 18px;
        border: none;
        outline: none;
        background-color: black;
        color: white;
        cursor: pointer;
        padding: 25px;
        border-radius: 50px;
        }

        #myBtn:hover {
        background-color: #555;
        }
    </style>
    <body>
        
        <!-- Navigation-->
        <?php include "navbar.php"?>
        <?php if(isset($_SESSION['USER_ID'])){ ?>
        <!-- Header-->
        <header class="bg-dark py-5">
            <div class="container px-4 px-lg-5 my-5">
                <div class="text-center text-white"> <!--Het werkt -->
                    <h1 class="display-4 fw-bolder">Goedemorgen, <?php echo $_SESSION['USERNAME'];?></h1>
                    <p class="lead fw-normal text-white-50 mb-0">Shop in style</p>
                </div>
            </div>
        </header>
        <?php
        } else {
        ?>
                <!-- Header-->
                <header class="bg-dark py-5">
            <div class="container px-4 px-lg-5 my-5">
                <div class="text-center text-white"> <!--het werkt-->
                    <h1 class="display-4 fw-bolder">Goedemorgen, Gast</h1>
                    <p class="lead fw-normal text-white-50 mb-0">Shop in style</p>
                </div>
            </div>
        </header>
        <?php } ?>
        <!--miscchien dit toch in een whileloop gooien dat zal ook de code korter maken-->
        <!-- Section-->
        <button onclick="topFunction()" id="myBtn" title="Go to top">↑</button> 
        <?php 
        include "config.php";
        $sql  = 'SELECT * FROM broodjes';
        $stmt = $conn->prepare($sql); 
        $stmt->execute();
        $result = $stmt->get_result(); // get the mysqli result
        while($row = $result-> fetch_assoc()){
            // $_SESSION['basket'] = array(); 
            //echo $row['broodnaam'];
            echo '        <section class="py-5">
            <div class="container px-4 px-lg-5 mt-5">
                <div class="row gx-4 gx-lg-5 row-cols-2 row-cols-md-3 row-cols-xl-4 justify-content-center">
                    <div class="col mb-5">
                        <div class="card h-100">
                            <!-- Product image dit kan later nog wel-->
                            <div class="fw-image">
                                <img class="card-img-top" src="https://dummyimage.com/450x300/dee2e6/6c757d.jpg" alt="..." />
                            </div>
                            <!-- Product details-->
                            <div class="card-body p-4">
                                <div class="text-center">
                                    <div class="test1">
                                    <input type="hidden" name="broodjes_ID" value=', $row['broodjes_ID'] , '/>
                                    </div>
                                    <!-- Product name-->
                                    <div class="test3">
                                        <input type="hidden" name="broodnaam" value=', $row['broodnaam'] , '/>
                                        <h5 class="fw-bolder">'.$row['broodnaam']. '</h5>
                                    </div>
                                    <!-- Product price-->
                                    <div class="test2">
                                        <input type="hidden" name="broodnaam" value=', $row['prijs'] , '/>
                                        <h3> Prijs:  </h3>   <h3 class="fw-price"> €'.$row['prijs']. '</h3><br>
                                    </div>
                                    <!--voorraad--> 
                                    '; if($row['voorraad'] == 0){
                                        echo '
                                        <h3 class="fw-voorraad" style="color: red;"> uitverkocht</h3><br>
                                    '; }else{ 
                                        echo ' 
                                        Voorraad: '.$row['voorraad'].'<br>
                                        </div>
                                        </div>
                                        <!-- Product actions-->
                                        <form action="cart.php?broodjes_ID='. $row['broodjes_ID'].'" method="post" name="broodjes" value"<?php echo htmlentities(serialize($_SESSION["basket"])); ?>
                                            <div class="card-footer p-4 pt-0 border-top-0 bg-transparent">
                                                <div class="text-center"><button class="btn btn-outline-dark mt-auto shop-item-button" type="submit" name="add_to_cart">Add to cart</button></div>
                                            </div>
                                        </form>
                                    '; } 
                        echo '</div>
                    </div>
                </div>
            </div>
        </section>';                           
        if (isset($_POST['add_to_cart'])) {
            $_SESSION['basket'] = array();
            $_SESSION['basket'] = array_push($_SESSION['basket'], $row['broodjes_ID'], $row['prijs'], $row['broodnaam'], $row['voorraad']) ;
            
           
        }
        }
        ?>
        
        <!-- Footer-->
        <?php include "footer.php";?>
        <!-- Bootstrap core JS-->
        <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
        <!-- Core theme JS-->
        <script src="js/scrolltotop.js"></script>
    </body>
</html>

cart.php this is where the shopping cart is

<?php 
error_reporting(E_ALL);
ini_set('display_errrors', '1');
// session_destroy();
?>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
        <meta name="description" content="" />
        <meta name="author" content="" />
        <title>Cart</title>
        <!-- Favicon-->
        <link rel="icon" type="image/x-icon" href="assets/favicon.ico" />
        <!-- Bootstrap icons-->
        <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.5.0/font/bootstrap-icons.css" rel="stylesheet" />
        <!-- Core theme CSS (includes Bootstrap)-->
        <link href="css/styles.css" rel="stylesheet" />
        <link href="css/stylecart.css" rel="stylesheet" />
        <script src="js/scripts.js" async></script>

    </head>
    <style>
    body {
        font-size: 20px;
    }

    </style>
<body>
<a class="back" href="index.php"> class="bi bi-arrow-left-circle-fill bi-5x"></a>
<?php 
include "config.php";
// array_pushed nog niks
    // array_push($_SESSION['basket'], $_GET['broodjes_ID']);
     //s$_SESSION['basket'] =  
     $_SESSION['basket'] = unserialize($_POST[$_SESSION["basket"]]);
//    session basket word uitgebreid met het getal dat in de url staat
//     }
        ?>
        <div class="text-center" style="font-size: 100px;">🛍</div>
        <h2 class="text-center">Winkelmandje</h2><br>
        <section class="container content-section">
            <!-- <h2 class="section-header">CART</h2> -->
            <div class="cart-row">
                ITEM
                PRICE
                QUANTITY
            </div>  
            <?php 
            
               $broodjes_ID = $_GET['broodjes_ID'];
                //onthouden van vorige get request
                //$count = count($_SESSION['basket']); // count basket puts 3 times the same item in the shopping cart
                if($_SESSION['basket'] > 0){
                    $sum = 0;
                    for($i = 0; $i<$_SESSION['basket']; $i++){
                        //$basket =  $_SESSION['basket'][$i];
                        $sql = "SELECT broodjes_ID, broodnaam, prijs FROM broodjes WHERE broodjes_ID = ?";
                        // uitvoeren, resultaat tonen in tabel.
                        $stmt = $conn->prepare($sql);
                        $stmt->bind_param("i", $broodjes_ID); 
                        $stmt->execute();
                        $result = $stmt->get_result(); // get the mysqli result
                        while($row = $result-> fetch_assoc()){     
                            echo '<div class="cart-items">';
                            echo '<div class="cart-row">';
                            echo '<div class="cart-item cart-column">';
                            echo ''. $row['broodnaam'] . '';
                            echo '</div>';
                            echo ' €'. $row['prijs'] . '';
                            echo '</div>';
                            echo '</div>';
                            
                            $sum += $row['prijs']; 
                        }
                        
                    }
                ?>
                    <div class="cart-total">
                        class="cart-total-title">
                         € <?php echo $sum;?>
                    </div>
            <?php

                }else{
                    echo 'mandje is leeg.';

            ?>
                <div class="cart-total">
                    ^__strong class="cart-total-title">Total
                     € 0
                </div>
            <?php 
            }
            ?>



            <div class="text-center">
                <button class="btn btn-outline-primary"  type="button"><a href="bestellen.php">PURCHASE</a></button>
            </div>
        </section>
</body

What I have tried:

I have tried looking online and I have tried asking people around me but because of the lockdown they have a hard time helping me so that's why I just ask online now

Posted 20-Dec-21 23:00pm

Rebecca2002

Updated 21-Dec-21 23:14pm

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

raouf333 · Answer 1 · 2021-12-21T10:26:00

Solution 1

if your session is started correctly so try to remove

PHP

$_SESSION['basket'] = array();

Posted 21-Dec-21 10:26am

raouf333

Comments

Rebecca2002 22-Dec-21 3:10am

but then how will I have my array??