title: Sessions don't work on MAMP
body: <p>I'm using MAMP, but I have a problem with session. My code works perfectly on WAMP, but doesn't work on MAMP and I don't no why. I looked the phpinfo but there are the same for the session between MAMP and WAMP.</p>
  
  <p>PHP log file :
  <code>[01-May-2012 12:18:28] PHP Warning:  session_start() [&lt;a href='function.session-    start'&gt;function.session-start&lt;/a&gt;]: Cannot send session cookie - headers already sent by     (output started at /Applications/MAMP/htdocs/Website/index.php:7) in     /Applications/MAMP/htdocs/Website/header.php on line 2
  [01-May-2012 12:18:28] PHP Warning:  session_start() [&lt;a href='function.session-start'&gt;function.session-start&lt;/a&gt;]: Cannot send session cache limiter - headers already sent (output started at /Applications/MAMP/htdocs/Website/index.php:7) in /Applications/MAMP/htdocs/Website/header.php on line 2</code></p>
  
  <p>Apache log file :
  <code>[Tue May 01 12:03:29 2012] [notice] Digest: generating secret for digest authentication ...
  [Tue May 01 12:03:29 2012] [notice] Digest: done
  [Tue May 01 12:03:29 2012] [notice] Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.6 configured -- resuming normal operations
  [Tue May 01 12:04:11 2012] [notice] caught SIGTERM, shutting down
  [Tue May 01 12:04:24 2012] [notice] Digest: generating secret for digest authentication ...
  [Tue May 01 12:04:24 2012] [notice] Digest: done
  [Tue May 01 12:04:24 2012] [notice] Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8r DAV/2 PHP/5.3.6 configured -- resuming normal operations
  [Tue May 01 12:05:11 2012] [error] [client 127.0.0.1] client denied by server configuration: /Applications/MAMP/htdocs/.DS_Store</code></p>
  
  <p>Why they doesn't work ?</p>
  
  <p>Thank you.</p>