title: Apache does not work when I want to use another version of PHP
body: <p>My Wamp server works fine with the latest version of PHP. But I need to run it with an older version of PHP and when I switch to that older version, Apache does not start and Wamp icon remains orange.</p>
  
  <pre><code>Apache version: 2.2.22
  PHP version that is working: 5.3.13
  desired PHP version (not working): 5.2.8
  </code></pre>
  
  <hr>
  
  <pre><code>Wamp server version 2.2
  </code></pre>
  
  <p>Error log:</p>
  
  <pre><code>[Tue Sep 24 17:15:26 2013] [notice] Parent: Received shutdown signal -- Shutting down the server.
  [Tue Sep 24 17:15:26 2013] [notice] Child 8356: Exit event signaled. Child process is ending.
  [Tue Sep 24 17:15:27 2013] [notice] Child 8356: Released the start mutex
  [Tue Sep 24 17:15:28 2013] [notice] Child 8356: All worker threads have exited.
  [Tue Sep 24 17:15:28 2013] [notice] Child 8356: Child process is exiting
  [Tue Sep 24 17:15:28 2013] [notice] Parent: Child process exited successfully.
  [Tue Sep 24 17:15:34 2013] [notice] Apache/2.2.22 (Win64) PHP/5.3.13 configured -- resuming normal operations
  [Tue Sep 24 17:15:34 2013] [notice] Server built: May 13 2012 19:41:17
  [Tue Sep 24 17:15:34 2013] [notice] Parent: Created child process 10372
  httpd.exe: Syntax error on line 127 of C:/wamp/bin/apache/apache2.2.22/conf/httpd.conf: Cannot load C:/wamp/bin/php/php5.2.8/php5apache2_2.dll into server: %1 \xe4r Not a valid Win32-program.  
  [Tue Sep 24 17:15:34 2013] [crit] (OS 6)Referensen (handle) är felaktig.  : master_main: create child process failed. Exiting.
  </code></pre>