How to set and get a cookie

      $name = 'userid'; 
      $value = '87'; 
      $expire = strtotime('+1 year'); 
      $path = '/'; 
      setcookie($name, $value, $expire, $path);
      

      $userid = filter_input(INPUT_COOKIE, 'userid', FILTER_VALIDATE_INT); // 87
      

      $expire = strtotime('-1 year'); 
      setcookie('userid', '', $expire, '/');
      

Description

• To set a cookie in the user’s browser, you can use the setcookie() function. This function must be called before any HTML output is sent from your application.
• A session cookie expires when the user closes the browser. A persistent cookie doesn’t expire until the specified expiration date.
• Once a cookie has been set, you can get it the next time the browser requests a page. To do that, you can use the filter_input() function to get it from the superglobal $_COOKIE variable. This variable is an associative array where the cookie name is the key and the cookie value is the value.
• To delete a cookie from a browser, set the value to an empty string and the expiration date to a time in the past. Any remaining parameters must have the same values as when the cookie was originally created.