--- trackfield_graph.inc	Thu Feb 05 04:27:38 2009
+++ trackfield_graph.inc	Thu Mar 19 11:34:04 2009
@@ -1,4 +1,18 @@
 <?php
+/*
+ * The function getallheaders() only seems to exist if running php as an apache module. 
+ * So if this function is missing, we create it here.
+ */
+if (!function_exists('getallheaders')) {
+  function getallheaders() {
+    foreach ($_SERVER as $name => $value) {
+      if (substr($name, 0, 5) == 'HTTP_') {
+        $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
+      }
+    }
+    return $headers;
+  }
+}
 
 /* Where we will store our cached graphs */
 
@@ -271,7 +285,10 @@
    * Tell Apache not to compress it again.
    */
 
-  apache_setenv('no-gzip', '1');
+  // Checks if this function exists first, in case php is not an apache module...
+  if (function_exists('apache_setenv')) {
+    apache_setenv('no-gzip', '1');
+  }
 
   /* Second best - see if we have this in our cache. */
   $cache_file = _trackfield_graph_cache_file($graphargs);