Resolve "Remove all use of GLOBALS"

Closes #13

classes/Endpoint.php

@@ -19,6 +19,7 @@ final class Endpoint
         global $conf;
         $accept = 'application/sparql-results+json';
         $modified = 0;
+        $aux = '';
 
         if ($output === 'xml') {
             $accept = 'application/sparql-results+xml';
@@ -26,19 +27,21 @@ final class Endpoint
             $accept = 'application/rdf+xml';
         }
 
+        $cacheFile = $conf['home'] . "cache/query" . md5($this->sparqlUrl . $q);
         if ($this->caching($conf)) {
-            $cacheFile = $conf['home'] . "cache/query" . md5($this->sparqlUrl . $q);
             if (file_exists($cacheFile)) {
                 $modified = filemtime($cacheFile);
             }
+
+            /**
+             * If we have cached content lets use it.
+             */
+            if ($modified + $conf['cache']['global'] > time()) {
+                $aux = file_get_contents($cacheFile);
+            }
         }
 
-        /**
-         * If we have cached content use it, if not make a https request.
-         */
-        if ($this->caching($conf) && $modified + $conf['cache']['global'] > time()) {
-            $aux = (file_get_contents($cacheFile));
-        } else {
+        if (!$aux) {
             $result = $this->curl($q, $accept, $conf);
             $aux = $result['result'];
             $this->updateCache($result['status'], $cacheFile, $aux, $conf);