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Syam Kumar R. http://www.webmasterview.com/

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Content Negotiation

Serve XHTML as application/xhtml+xml to browsers which accept it (and to W3C Validator).

   1  <?php 
   2  header("Vary: Accept");
   3  if (stristr($_SERVER['HTTP_ACCEPT'], 'application/xhtml+xml') || stristr($_SERVER["HTTP_USER_AGENT"],"W3C_Validator"))
   4  {
   5    header('Content-type: application/xhtml+xml');
   6    echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
   7  }
   8  else
   9  {
  10    header('Content-type: text/html');
  11  }
  12  ?>
to php content_negotiation MIME-type by Syam on Apr 21, 2005 2 Comments
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