PHP - Add value to existing array in cookie on button click

Question

I want to add values to the existing array variable inside my cookie.

Currently I set my cookie using Ajax:

Ajax:

function setcookie(productid){
     $.ajax({
            type: 'POST',
            url: "setcookies.php",
            data: {
                id: "productid"
            },
            success: function (e) {
                alert(e);
            }
        });
}

PHP setcookies.php

<?php
$cookiename = "products";
$cart = array();

$pid = $_POST['id'];
array_push($cart, $pid);

setcookie($cookiename, serialize($cart), time() + 3600, "/");
$_COOKIE[$cookiename] = serialize($cart);

When I click addproduct button setcookie() function will be called. Clicking addproduct button three times I expected that 3 ids of the product should be added to the cookie array but when I access the page that will show the cookies in my page it will just only show the last productid added.

Thank you in advance guys.

EDIT FOR MY WORKING CODE:

Below code works in my end: Just slightly modified the code answered by Dominique.

$cookiename = "products";
$cart = null;
$pid = $_POST['id'];
if (!empty($_COOKIE[$cookiename])) {
    $cart = unserialize($_COOKIE[$cookiename]);
    array_push($cart, $pid);
} else {
    $cart = array();
    array_push($cart, $pid);
}
setcookie($cookiename, serialize($cart), time() + 3600, "/");
$_COOKIE[$cookiename] = serialize($cart);

@iamj: see stackoverflow.com/questions/14573223/… on an explanation for seeting cookies client-sided. — Fabian S.
– Fabian S., Commented Jun 6, 2017 at 14:58

Chinmay235 · Accepted Answer · 2019-11-13 14:04:30Z

7

In your code, you instantiate $cart as an array containing 0 element and put it in $_COOKIE['products'] so it'll delete existing content.

It would explain why you could only have an array with a simple element.

This code should work

<?php
$cookiename = "products";

$cart = array();

if(!empty($_COOKIE[$cookiename])) {
    $cart = json_decode($_COOKIE[$cookiename], true);
}

$pid = $_POST['id'];
array_push($cart, $pid);

setcookie($cookiename, json_encode($cart), time() + 3600, "/");
$_COOKIE[$cookiename] = json_encode($cart);

edited Nov 13, 2019 at 14:04

Chinmay235

3,4448 gold badges65 silver badges99 bronze badges

answered Jun 6, 2017 at 14:12

Dominique Vienne

4152 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

iamj Over a year ago

lemme try that ;)

iamj Over a year ago

Thank you for your response. I already fix the problem in my code. I just modified your code a little :)

Mohd Abdul Baquee · Accepted Answer · 2019-02-24 20:12:18Z

1

<?php

$pid = $_POST['id'];
$cookiename = "products";

$cart = array();

if(isset($_COOKIE[$cookiename]) && !empty($_COOKIE[$cookiename])) {
    $cart = unserialize(base64_decode($_COOKIE[$cookiename]));
}

array_push($cart, $pid);

setcookie($cookiename, base64_encode(serialize($cart)), time() + 3600, "/");

//Your Cookie data output
$_COOKIE[$cookiename] = serialize($cart);

answered Feb 24, 2019 at 20:12

Mohd Abdul Baquee

4493 silver badges7 bronze badges

Collectives™ on Stack Overflow

PHP - Add value to existing array in cookie on button click

2 Answers 2

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related