cookies php：无法使用isset（）

Question

Hi I'm trying to make a cookie that will remeber a login but it says: Cannot use isset() on the result of an expression (you can use "null !== expression" instead). Can some one please help me?

The code that doesn't work is:

if(isset($_COOKIE['user']['id'] && !empty(isset($_COOKIE['user']['id']))){
  ...
}

i edited the code to: if (isset ($_logincookie['cookie_user'] && !empty($_logincookie['cookie_user']))){

but still the same problem

Answer 1

Pay attention to the brackets. Also.. there is no need for isset and empty to be used on the same variable. empty verifies also if the variable is set:

if(!empty($_COOKIE['user']['id'])){
    // do something
}