title: APC cache installation with pear
body: <p>I am trying to install APC cache on my mac osx(Maverick). But after running the command 'pear install apc', I am getting an error as below:</p>
  
  <pre><code>/private/tmp/pear/install/APC/apc.h:61:10: fatal error: 'php.h' file not found
  #include "php.h"
  </code></pre>
  
  <p>How to resolve this? Thanks.</p>