title: php5.6 setcookie return empty value
body: <p>I'm using php5.6, server Ubuntu 16.04.2 LTS, Apache/2.4.18 (Ubuntu) </p>
  
  <p>I have set some cookie value, but when print it's empty </p>
  
  <pre><code>setcookie("PHPSESSID", "Cookie Value", time()+3600,"/");
  print_r($_COOKIE);
  </code></pre>