title: Why do I have two session id in my header?
body: <p>I'm using PHP5.3, Apache 2.2 and Zend Framework 1.11 and when I do a request with curl, I got two Set-Cookie headers with two differents session id.</p>
  
  <p>Any  ideas?</p>
  
  <pre><code>&gt; POST /api/register HTTP/1.1
  &gt; Authorization: Basic Ymd1ZXJ0eQ==
  &gt; Host: api.domain.tld
  &gt; Accept: */*
  &gt; Content-Length: 66
  &gt; Content-Type: application/x-www-form-urlencoded
  &gt; 
  &lt; HTTP/1.1 200 OK
  &lt; Date: Wed, 07 Dec 2011 13:27:07 GMT
  &lt; Server: Apache
  &lt; X-Powered-By: PHP/5.3.8
  &lt; Set-Cookie: SESSID=vtvackh55bj1up3ouoq4bhk545; expires=Thu, 06-Dec-2012 19:15:53 GMT; path=/
  &lt; Expires: Thu, 19 Nov 1981 08:52:00 GMT
  &lt; Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
  &lt; Pragma: no-cache
  &lt; Set-Cookie: SESSID=79a1g98e0pkqlq8fo7elpe9492; expires=Thu, 06-Dec-2012 19:15:53 GMT; path=/
  &lt; Vary: Accept-Encoding,User-Agent
  &lt; Content-Length: 128
  &lt; Content-Type: application/json
  </code></pre>