How can i check if an external page exists?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/981954/how-can-one-check-to-see-if-a-remote-file-exists-using-php">How can one check to see if a remote file exists using PHP?</a><br>
  <a href="http://stackoverflow.com/questions/4437223/what-is-the-best-way-to-check-if-a-url-exists-in-php">What is the best way to check if a URL exists in PHP?</a>  </p>
</blockquote>



<p>i m displaying some RSS articles on my site, and i want to display a 404 error message in case the external article has been removed or archived. how can i do this with php?</p>

<p>thanx</p>
