diff --git a/Lib/Helper.php b/Lib/Helper.php
index 430936c..a71d0de 100644
--- a/Lib/Helper.php
+++ b/Lib/Helper.php
@@ -1845,8 +1845,9 @@ public static function toCamelCase($origin, $cahrToReplace = '_', $capitaliseFir
         if ($capitaliseFirstChar) {
             $origin = ucfirst($origin);
         }
-        $func = create_function('$c', 'return strtoupper($c[1]);');
 
-        return preg_replace_callback('/'.$cahrToReplace.'([a-z])/', $func, $origin);
+        return preg_replace_callback('/' . $cahrToReplace . '([a-z])/', function($c){
+            return strtoupper($c[1]);
+        }, $origin);
     }
 }