diff --git a/src/Symfony/Component/HttpFoundation/ParameterBag.php b/src/Symfony/Component/HttpFoundation/ParameterBag.php
index 3a38b5fab334..16e892f2f7f6 100644
--- a/src/Symfony/Component/HttpFoundation/ParameterBag.php
+++ b/src/Symfony/Component/HttpFoundation/ParameterBag.php
@@ -242,4 +242,34 @@ 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 mixed   $options Filter options.
+     * 
+     * @see http://php.net/manual/en/function.filter-var.php
+     *
+     * @return mixed
+     */
+    public function filter($key, $default = null, $deep = false, $filter=FILTER_DEFAULT, $options=array())
+    {
+        $value = $this->get($key, $default, $deep);
+        
+        // Always turn $options into an array - this allows filter_var option shortcuts.
+        if (!is_array($options) && $options) {
+            $options = array('flags' => $options);
+        }
+        
+        // Add a convenience check for arrays.
+        if (is_array($value) && !isset($options['flags'])) {
+            $options['flags'] = FILTER_REQUIRE_ARRAY;
+        }
+        
+        return filter_var($value, $filter, $options);
+    }
 }
diff --git a/tests/Symfony/Tests/Component/HttpFoundation/ParameterBagTest.php b/tests/Symfony/Tests/Component/HttpFoundation/ParameterBagTest.php
index d93f6a4d557b..da0eb4af4a01 100644
--- a/tests/Symfony/Tests/Component/HttpFoundation/ParameterBagTest.php
+++ b/tests/Symfony/Tests/Component/HttpFoundation/ParameterBagTest.php
@@ -162,4 +162,44 @@ public function testGetInt()
         $this->assertEquals(123, $bag->getInt('digits'), '->getInt() gets a value of parameter as integer');
         $this->assertEquals(0, $bag->getInt('unknown'), '->getInt() returns zero if a parameter is not defined');
     }
+    
+    /**
+     * @covers Symfony\Component\HttpFoundation\ParameterBag::filter
+     */
+    public function testFilter()
+    {
+        $bag = new ParameterBag(array(
+            'digits' => '0123ab', 
+            'email' => 'example@example.com', 
+            'url' => 'http://example.com/foo',
+            'dec' => '256',
+            'hex' => '0x100',
+            'array' => array('bang'),
+            ));
+
+        $this->assertEmpty($bag->filter('nokey'), '->filter() should return empty by default if no key is found');
+        
+        $this->assertEquals('0123', $bag->filter('digits', '', false, FILTER_SANITIZE_NUMBER_INT), '->filter() gets a value of parameter as integer filtering out invalid characters');
+        
+        $this->assertEquals('example@example.com', $bag->filter('email', '', false, FILTER_VALIDATE_EMAIL), '->filter() gets a value of parameter as email');
+        
+        $this->assertEquals('http://example.com/foo', $bag->filter('url', '', false, FILTER_VALIDATE_URL, array('flags' => FILTER_FLAG_PATH_REQUIRED)), '->filter() gets a value of parameter as url with a path');
+        
+        // This test is repeated for code-coverage
+        $this->assertEquals('http://example.com/foo', $bag->filter('url', '', false, FILTER_VALIDATE_URL, FILTER_FLAG_PATH_REQUIRED), '->filter() gets a value of parameter as url with a path');
+        
+        $this->assertFalse($bag->filter('dec', '', false, FILTER_VALIDATE_INT, array(
+            'flags'   => FILTER_FLAG_ALLOW_HEX,
+            'options' => array('min_range' => 1, 'max_range' => 0xff))
+                ), '->filter() gets a value of parameter as integer between boundaries');
+        
+        $this->assertFalse($bag->filter('hex', '', false, FILTER_VALIDATE_INT, array(
+            'flags'   => FILTER_FLAG_ALLOW_HEX,
+            'options' => array('min_range' => 1, 'max_range' => 0xff))
+                ), '->filter() gets a value of parameter as integer between boundaries');
+        
+        $this->assertEquals(array('bang'), $bag->filter('array', '', false), '->filter() gets a value of parameter as an array');
+        
+        
+    }
 }