diff --git a/src/ProfilingData.php b/src/ProfilingData.php
index 6b44928..798af8f 100644
--- a/src/ProfilingData.php
+++ b/src/ProfilingData.php
@@ -7,6 +7,26 @@
  */
 final class ProfilingData
 {
+    /** @var array */
+    private $allowedServerKeys = array(
+        'DOCUMENT_ROOT',
+        'HTTPS',
+        'HTTP_HOST',
+        'HTTP_USER_AGENT',
+        'PATH_INFO',
+        'PHP_AUTH_USER',
+        'PHP_SELF',
+        'QUERY_STRING',
+        'REMOTE_ADDR',
+        'REMOTE_USER',
+        'REQUEST_METHOD',
+        'REQUEST_TIME',
+        'REQUEST_TIME_FLOAT',
+        'SERVER_ADDR',
+        'SERVER_NAME',
+        'UNIQUE_ID',
+    );
+
     /** @var array */
     private $excludeEnv;
     /** @var callable|null */
@@ -31,36 +51,13 @@ public function getProfilingData(array $profile)
     {
         $url = $this->getUrl();
 
-        $requestTimeFloat = explode('.', sprintf('%.6F', $_SERVER['REQUEST_TIME_FLOAT']));
-        $sec = $requestTimeFloat[0];
-        $usec = isset($requestTimeFloat[1]) ? $requestTimeFloat[1] : 0;
-
-        $allowedServerKeys = array(
-            'DOCUMENT_ROOT',
-            'HTTPS',
-            'HTTP_HOST',
-            'HTTP_USER_AGENT',
-            'PATH_INFO',
-            'PHP_AUTH_USER',
-            'PHP_SELF',
-            'QUERY_STRING',
-            'REMOTE_ADDR',
-            'REMOTE_USER',
-            'REQUEST_METHOD',
-            'REQUEST_TIME',
-            'REQUEST_TIME_FLOAT',
-            'SERVER_ADDR',
-            'SERVER_NAME',
-            'UNIQUE_ID',
-        );
-
-        $serverMeta = array_intersect_key($_SERVER, array_flip($allowedServerKeys));
+        list($sec, $usec) = $this->getRequestTime($_SERVER['REQUEST_TIME_FLOAT']);
 
         $meta = array(
             'url' => $url,
             'get' => $_GET,
             'env' => $this->getEnvironment($_ENV),
-            'SERVER' => $serverMeta,
+            'SERVER' => $this->getServer($_SERVER),
             'simple_url' => $this->getSimpleUrl($url),
             'request_ts_micro' => array('sec' => $sec, 'usec' => $usec),
             // these are superfluous and should be dropped in the future
@@ -128,4 +125,27 @@ private function getUrl()
 
         return $url;
     }
+
+    /**
+     * @param float $requestTime
+     * @return array
+     */
+    private function getRequestTime($requestTime)
+    {
+        $parts = explode('.', sprintf('%.6F', $requestTime));
+
+        $sec = $parts[0];
+        $usec = isset($parts[1]) ? $parts[1] : 0;
+
+        return array((int)$sec, (int)$usec);
+    }
+
+    /**
+     * @param array $server
+     * @return array
+     */
+    private function getServer(array $server)
+    {
+        return array_intersect_key($server, array_flip($this->allowedServerKeys));
+    }
 }