title: Youtube Videos PHP API 'too_many_recent_calls'
body: <p>I have approx 5000 video urls in database. However some of those aren't valid youtube videos. So for cleaning the invalid videos, I am using PHP api <code>file_get_contents</code> from <code>"http://gdata.youtube.com/feeds/api/videos/&lt;video id&gt;?v=2&amp;alt=jsonc"</code></p>
  
  <p>However fater some calls, I get <code>***'failed to open stream: HTTP request failed! HTTP/1.0 403 Forbidden in xx/xx/xxxxx.php'***</code> </p>
  
  <p>I know that is due to too_many_recent_calls. But how do I work out with this? Any alternative approach?</p>