What is the best way to generate PHP or Javascript cookies?

Question

PHP

I decided to make a small online store, since it is small, I see no reason to create a registration system on the site. I plan to create a "Wish List on the site", and store the goods that the user has saved in cookies, in connection with this, the question arose of how best to generate cookies using PHP or Javascript? Will it somehow affect the security or speed of work, depending on the chosen method?

Answer 1

Depending on the situation.
If you need to do a preliminary check, some kind, then I work on the side of the backend.
If no checks need to be done, then I add from the client side.