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structWSF
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<?php
    
   
   // Check if the SID (Server ID) file is existing. If it is not, we create it.

   $hFile;
   
   $sid = "";
   
   // The Web server has to have writing permissions on the SID directory
   // This variable as to be properly setuped in to have a properly working SID.
   $sidDirectory = "";
   
   if(($hFile = @fopen($sidDirectory."server.sid", "x+")) === FALSE)
   {
      // Read the SID
      $hFile = fopen($sidDirectory."server.sid", "r");
      
      if($hFile) 
      {
          while (!feof($hFile)) 
         {
              $sid = fgets($hFile, 4096);
              break;
          }
         
          fclose($hFile);
      }     
   }
   else
   {
      // Generate the SID
      $sid = md5(microtime());
      
      // Write the SID to the server.sid file
      if(fwrite($hFile, $sid) === FALSE)
      {
         die;
      }
   }

   echo $sid;
   
?>

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