How to set Php's auto_prepend_file directive per directory?

Question

Background: I\'ve got some code that checks to see if a user has a valid session before processing the php page that I would like to set as the auto_prepend_file. However,

Answer 1

There is a great tutorial called: Automatically Include Files with PHP & Apache that explain how to do that with the apache directive and PHP code to append at the end. First, define a file to catch the page before it's outputted and append whatever you want:

  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-xxxxxxxxx-y']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();

GA;
  $replace = array('','');
  $page = str_replace($replace, "{$script}\r", $page);
//   $replace2 = array('','');
//   $page = str_replace($replace2, " - My Awesome Site", $page);
  return $page;
}
ob_start("appendToFile");
?>

Then add the Apache directive to your virtual host. You need to prepend the PHP file in order to use the ob_start() method :

    AddType application/x-httpd-php .html .htm
    php_value auto_prepend_file /absolute/path/to/apache-prepend.php