how to delete a value from array in cookie array?

Question

I am using Cakephp 3.0.I am new in cookie concept. I have successfully created a cookie but i want to delete a value from cookie array. Here is my code:-

enter code here
$cookiedata=
Array
(
[0] => 2
[1] => 1
)

$_GET['id'] = 2;

public function cartitems(){
    $cookiedata = $this->Cookie->read('ProductCartdata'); 
    $this->loadModel('Products');
    $query = $this->Products->find('all')->where(['id IN' =>$cookiedata]);
    $products = $query->hydrate(false)->toArray();
        if(isset($_GET['id'])){
            if(($key = array_search($_GET['id'], $cookiedata)) !== false) {
                    unset($cookiedata[$key]);
            } 
    $this->redirect(['controller'=>'test','action' => 'cartitems']);    
   }
        $this->set(compact('products','cookiedata'));
}

And i want that result:-

enter code here
Array
(
[0]=>1
)

dbrumann · Accepted Answer · 2017-02-11 09:27:35Z

1

You can read up on the Cookie-component in the documentation. There is a delete-method if you completely want to remove the data in your cookie:

Cookie::delete($key)

In your case it probably makes more sense to write over the existing data after looping:

$this->Cookie->write('ProductCartdata', $cookiedata);

answered Feb 11, 2017 at 9:27

dbrumann

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4 Comments

kunal Over a year ago

why we again write cookie after deleting value from array

dbrumann Over a year ago

Well you want to update the Cookie don't you? The long winded answer is. When you read the cookie you get a copy of the data, but it stays the same in the cookie. If you update the data, e.g. by unsetting a key, then you have to update the cookie-data as well. Otherwise the next time you read from the cookie you will get the old data.

kunal Over a year ago

so according to you we again write cookie

dbrumann Over a year ago

Yes, we will update the cookie data to write our changes to the cookie again. You can think of your cookie as a kind of database. When you want your changes to stay you have to insert or update in the database. It's the same with data in a cookie.

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