How to use sessions and cookies in php?

Question

PHP

I mean, so that there are no injections and optimally, what is the life expectancy?

Answer 1

https://www.youtube.com/watch?v=tGrUKglMwkQ
https://www.youtube.com/watch?v=3b3Pv9LSM5A
The lessons are old, but if you are a beginner, understanding and application will come with time))
The difference between cookies and sessions is https://ru.stackoverflow.com/questions/90280/%D0%A...

Answer 2

It's simple - you don't need to use cookies. On the webstorage client on the session server. All.