[Prestashop Developement] Use Cookie & Session in a PrestaShop Module

In a Prestashop modules or Prestashop System, the Prestashop does not allow use $_SESSION, $_COOKIE because security reasons

if you want to stored your temporarily variables in cookie or session. you can use global Cookie object from Prestashop System.

1.if you are in a controller or a class extends from Module class, you can use global Cookie object throught

$cookie = &$this->context->cookie;

or directly use

$this->context->cookie

if you are in another placements, you can use global Cookie object throught

$cookie = Context::getContext()->cookie;

Note: Context::getContext()->cookie like $this->context->cookie

2. add, update a key/value in global Cookie object

you can add/update a pair of key/value with 2 ways

1st solution:

$cookie->__set(‘key1’, ‘value 1’);

$cookie->__set(‘key2’, ‘value 2’);

…

// then write it to browser

$cookie->write();

2nd solution:

Directly assign value for property of Cookie object

$cookie->key1 = “value 1”;

$cookie->key2 = “value 2”;

..

// then write it

$cookie->write();

3. read, remove a key/value from Cookie

You can use key/value as a property of cookie object

example, print it:

echo $cookie->key1;

or you can use __get method

echo $cookie->__get(‘key1’);

if you want to remove a key/value from Cookie object, you can use 2 ways:

set key to null

$cookie->key1 = null

Or use __unset method

$cookie->__unset(‘key1’);

Some another methods from Cookie object, you can open file

PRESTASHOP_ROOT\classes\Cookie.php

4. Cookie of Backoffice is difference Cookie of Frontend

If you are in a Front controller or any PHP files, PHP classes which only use in Frontend. But you want use Cookie of Backoffice in some cases: check admin permission, check user is admin, check admin user logged in, get id_employee, get translation string of Backoffice from Frontend…

You can use global Cookie object of Backoffice through creating a Cookie Object from admin: