title: A little help using Symfony
body: <p>Can anyone link me to some Symfony resources, they are hard to find. I am having a little trouble understanding how to use it correctly. Like with CodeIgniter to use the security helper you would load it doing this:</p>
  
  <pre><code>$this-&gt;load-&gt;helper('security');
  </code></pre>
  
  <p>And you would use its functions you would do something like this:</p>
  
  <pre><code>$data = $this-&gt;input-&gt;xss_clean($data);
  </code></pre>
  
  <p>But with Smyfony to redirect someone to a 404 page, you need to use the sfAction class and the redirect404() api. So could anyone explain or link me a good tutorial?</p>