title: php gmdate() Incorrect time zone
body: <p>When I used:</p>
  
  <pre><code>echo gmdate("YmdHis O")
  </code></pre>
  
  <p>output is:</p>
  
  <blockquote>
    <p>20151211091805 +0000</p>
  </blockquote>
  
  <p>but is wrong in Italy now is 10:00, why is my error?</p>