diff --git a/src/Config.php b/src/Config.php
index 93d02d5..60d3f04 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -236,8 +236,12 @@ Class Config {
    * @return void
    */
   public static function ini_set($option, $value) {
+    Log :: trace('Set PHP INI option "%s" to "%s"', $option, $value);
     if (ini_set($option, $value) === false)
-      Log::warning('Fail to set INI options "%s" to "%s"', $option, $value);
+      Log::warning('Fail to set PHP INI option "%s" to "%s"', $option, $value);
+    Log :: trace(
+      'PHP INI option "%s" after setting it to "%s": "%s"',
+      $option, $value, vardump(ini_get($option)));
   }
 
 }