Added generic filtering to ParameterBag.

Drak · Drak · commit 54454ba4aa72 · 2011-09-26T04:11:55.000+05:45
Adds filtering convenience using PHP's filter_var() e.g. `$request->get->filter($key, '', false, FITLER_SANITIZE_STRING);` See http://php.net/manual/en/filter.filters.php for capabilities.
diff --git a/src/Symfony/Component/HttpFoundation/ParameterBag.php b/src/Symfony/Component/HttpFoundation/ParameterBag.php
@@ -242,4 +242,25 @@ public function getInt($key, $default = 0, $deep = false)
     {
         return (int) $this->get($key, $default, $deep);
     }
+    
+    /**
+     * Filter key.
+     * 
+     * @param string  $key     Key.
+     * @param mixed   $default Default = null.
+     * @param boolean $deep    Default = false.
+     * @param integer $filter  FILTER_* constant.
+     * @param array   $options Fitler options.
+     *
+     * @return mixed
+     */
+    public function filter($key, $default = null, $deep = false, $filter=FILTER_DEFAULT, array $options=array())
+    {
+        $value = $this->get($key, $default, $deep);
+        if (is_array($value)) {
+            $options['flags'] = FILTER_REQUIRE_ARRAY;
+        }
+
+        return filter_var($value, $filter, $options);
+    }
 }
