Merge branch 'inputfilter/merge' of https://github.com/bakura10/zf2 i…

…nto feature/input-merging

src/FilterChain.php

@@ -180,6 +180,21 @@ public function attachByName($name, $options = array(), $priority = self::DEFAUL
         return $this->attach($filter, $priority);
     }
 
+    /**
+     * Merge the filter chain with the one given in parameter
+     *
+     * @param FilterChain $filterChain
+     * @return FilterChain
+     */
+    public function merge(FilterChain $filterChain)
+    {
+        foreach ($filterChain->filters as $filter) {
+            $this->attach($filter);
+        }
+
+        return $this;
+    }
+
     /**
      * Get all the filters
      *