title: unknown characters %252B in url
body: <p>i have a page with links gotten from rss. they are:
  broken link</p>
  
  <pre><code>http://news.asiaone.com/News/Latest%252BNews/Singapore/Story/A1Story20121220-390687.html
  </code></pre>
  
  <p>working link</p>
  
  <pre><code>http://news.asiaone.com/News/Latest%2BNews/Singapore/Story/A1Story20121220-390687.html
  </code></pre>
  
  <p>i realise it works by changing %252B to %2B. im using php. is there a way to detect and correct it on the run?</p>