Merge branch 'feature/form-collection' of https://github.com/bakura10…

…/zf2 into feature/form-collection

src/BaseInputFilter.php

@@ -71,7 +71,7 @@ public function add($input, $name = null)
             ));
         }
 
-        if (empty($name)) {
+        if (is_null($name) || $name === '') {
             $name = $input->getName();
         }
         $this->inputs[$name] = $input;