<code lang="PHP">
unset ($engine); 
$string = $HTTP_REFERER;
if (strstr($string, "google")){
   if (strstr($string, "search?")) {
      $engine = "google";
      $substr = explode("q=", $string);
      $substr = explode("&", $substr[1]);
      $kwphrase = eregi_replace("(%[0-9a-f]{2})+", " ", $substr[0]);
      $kwphrase = eregi_replace("(\+)+", " ", $kwphrase);
      $finalphrase = strtolower($kwphrase); 
   }
$to = explode("/", $PHP_SELF);
   $arraynum = count ($to);
   $page = $to[$arraynum-1];
   $date = date("Y-n-j") ;
</code>