Updating session variable not working php

Question

im now working in a cart where all products saved in a session variable. So if the same product exists in the cart it will just increase the quantity. But it looks like working when i echo out the variable but when i print the session variable it remain same. here is my code

<?php
require_once("inc/init.php");

$product_id = htmlentities($_POST['product_id'], ENT_QUOTES);
$quantiy_added = htmlentities($_POST['quantiy_added'], ENT_QUOTES);
$op = htmlentities($_POST['op'], ENT_QUOTES);

$Cart = new Cart();

//var_dump($Cart);

global $mysqli;

if ($op == "add-item") {
    if (isset($_SESSION['careat_cart'])) {              //if same item exists
        foreach ($_SESSION['careat_cart'] as $key => $value) {
            if ($product_id == $value['id']) {
                $value['quantity'] += $quantiy_added;
                echo $value['quantity'];
            } else echo "new item";

        }

    }
}

use session_start(); on top of the code just after <?php and you are good to go — Death-is-the-real-truth
– Death-is-the-real-truth, Commented Oct 4, 2017 at 5:35
session_start() is not the problem. session quantity is not setting what is prints — Fuad Hussain
– Fuad Hussain, Commented Oct 4, 2017 at 6:02

Death-is-the-real-truth · Accepted Answer · 2017-10-04 07:26:11Z

2

<?php
session_start();
require_once("inc/init.php");

$product_id = htmlentities($_POST['product_id'], ENT_QUOTES);
$quantiy_added = htmlentities($_POST['quantiy_added'], ENT_QUOTES);
$op = htmlentities($_POST['op'], ENT_QUOTES);

$Cart = new Cart();

//var_dump($Cart);

global $mysqli;

if ($op == "add-item") {
    if (isset($_SESSION['careat_cart'])) {              //if same item exists
        foreach ($_SESSION['careat_cart'] as $key => $value) {
            if ($product_id == $value['id']) {

                $value['quantity'] += $quantiy_added;
                echo $value['quantity'];
            } else echo "new item";

        }

    }
}

edited Oct 4, 2017 at 7:26

Death-is-the-real-truth

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answered Oct 4, 2017 at 5:34

Ravi Chauhan

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1 Comment

Fuad Hussain Over a year ago

adding session_start() shows error Notice: A session had already been started - ignoring session_start()

Dharman · Accepted Answer · 2020-02-18 20:42:02Z

0

I found the solution. It would be

$_SESSION['careat_cart'][$key]['quantity']+= $quantiy_added;

Instead of

$value['quantity'] += $quantiy_added;

edited Feb 18, 2020 at 20:42

Dharman♦

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answered Oct 4, 2017 at 8:20

Fuad Hussain

114 bronze badges

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