php cookie does not work at the first time reading

Question

I am a beginner for PHP and studying to use cookie for login. Would any body please check my code to see what is my problem, or let me how to fix this problem.

Wh

Answer 1

setcookie only sets up the header, that is being sent to the client. It doesn't change the $_COOKIE superglobal.

In other hand - $_COOKIE is filled up with the cookies sent from the client

So at first step - you set the cookie with setcookie and have nothing in $_COOKIE because client hasn't sent it yet, and will only on the next request.

And there is no way of doing what you want, rather than modifying $_COOKIE manually

PS: it is a bad idea to put user's password in the cookie