To display this variable-

Example:-  Printing a ws variable (Array element):-

  1. <html>  
  2.  <body>  
  3.  <?php
  4. echo $_SERVER[‘HTTP_USER_AGENT’];
  5.  ?>  
  6.  </body>   
  7. </html>  

A sample output of this script may be:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

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