Nagios check for Joomla (modifications)

--- check_joomla_version.php    2014-09-30 13:45:25.464600000 -0500
+++ check_joomla_version.php    2014-09-30 14:19:21.257705500 -0500
@@ -25,6 +25,13 @@
  ***/
 $localVersionFile = "/var/www/joomla/libraries/cms/version/version.php";
 $remoteVersionUrl = "http://update.joomla.org/core/list.xml";
+
+// Define the base path.
+// http://developer.joomla.org/manual/ch01s02.html
+//
+// JPATH_PLATFORM - The path to the Joomla Platform (where loader.php or
+// platform.php is located, usually in the same folder as import.php).
+define('JPATH_PLATFORM', '/var/www/libraries');


 // get local Joomla Version
@@ -36,7 +43,16 @@

 // get remote Joomla Version
 $xml = simplexml_load_file($remoteVersionUrl);
-$remoteJoomlaVersion = $xml->extension['version'];
+
+// Think ppr from Python - it prints out the structure
+//print_r($xml);
+
+// Evidently the XML feed lists additional supported versions
+// since the script was originally written. The first matching array
+// is no longer the version we're interested in checking against.
+// Now we want to grab the version element from the last extension array.
+$extension_array_count = count($xml->extension);
+$remoteJoomlaVersion = $xml->extension[$extension_array_count-1]['version'];


 // compare and return info