PHP Plugin Error

[enci]

$SCRIPT_NAME = $_SERVER['SCRIPT_NAME'];
$script_parts = preg_split("/\//", preg_replace("/^\//", "", $SCRIPT_NAME));
$thispage = array_pop($script_parts);
$thispage = preg_replace("/.php/", "", $thispage);
$section = "forum";
$campaign = $_SERVER['QUERY_STRING'];

#if page is index page, we want to log page category, so array_pop "index" to get category
#example, if page is /Insurance/index.php, we'll array_pop so name becomes Insurance instead of index
if ($thispage == "index") {
   $thispage = array_pop($script_parts);
   if ($thispage == "") {
      $thispage = "Home";
   }
   $thispage = $thispage."_Index";
}

$name = $thispage;

function email_error($reason) {
   $to = "email@test.com";
   $from = "From: db_error@test.com\r\n";
   $subject = "DB Error in Logs DB";

   $body = "There was an error in the logging function of the forum.  ".$reason;

   mail($to, $subject, $body, "$from");
} #end function email_error

function parse_se ($url) {
   if (stripos($url,"translate.google.com") == TRUE) {
      $engine = "Google Translate BETA";
   } elseif (stripos($url,"google.com") == TRUE) {
      $engine = "Google US";
   } elseif (stripos($url,"google.ca") == TRUE) {
      $engine = "Google Canada";
   } elseif (stripos($url,"google.co.uk") == TRUE) {
      $engine = "Google UK";
   } elseif (stripos($url,"google.com.nz") == TRUE) {
      $engine = "Google New Zealand";
   } elseif (stripos($url,"google.com.mx") == TRUE) {
      $engine = "Google Mexico";
   } elseif (stripos($url,"google.com.do") == TRUE) {
      $engine = "Google DR";
   } elseif (stripos($url,"google.co.at") == TRUE || stripos($url,"google.at") == TRUE) {
      $engine = "Google Germany";
   } elseif (stripos($url,"google.co.it") == TRUE || stripos($url,"google.it") == TRUE) {
      $engine = "Google Italy";
   } elseif (stripos($url,"google.com.tr") == TRUE) {
      $engine = "Google Turkey";
   } elseif (stripos($url,"google.ie") == TRUE) {
      $engine = "Google Ireland";
   } elseif (stripos($url,"dmoz.org") == TRUE) {
      $engine = "DMOZ";
   } elseif (stripos($url,"uk.ask.com") == TRUE) {
      $engine = "Ask UK";
   } elseif (stripos($url,"www.ask.com") == TRUE) {
      $engine = "Ask US";
   } elseif (stripos($url,"search.msn.com") == TRUE || stripos($url,"search.live.com") == TRUE) {
      $engine = "MSN US";
   } elseif (stripos($url,"search.msn.co.uk") == TRUE) {
      $engine = "MSN UK";
   } elseif (stripos($url,"search.msn.co.it") == TRUE) {
      $engine = "MSN Italy";
   } elseif (stripos($url,"netscape.com") == TRUE ) {
      $engine = "Netscape";
   } elseif (stripos($url,"aolsearch.aol.co.uk") == TRUE ) {
      $engine = "AOL UK";
   } elseif (stripos($url,"search.aol.com.au") == TRUE ) {
      $engine = "AOL AU";
   } elseif (stripos($url,"aolsearcht") == TRUE ) {
      $engine = "AOL";
   } elseif (stripos($url,"mail.yahoo.com") == TRUE ) {
      $engine = "Yahoo! Mail";
   } elseif (stripos($url,"images.search.yahoo.com") == TRUE ) {
      $engine = "Yahoo! Images";
   } elseif (stripos($url,"uk.search.yahoo.com") == TRUE ) {
      $engine = "Yahoo! UK";
   } elseif (stripos($url,"finance.groups.yahoo.com") == TRUE ) {
      $engine = "Yahoo! Finance";
   } elseif (stripos($url,"search.yahoo.com") == TRUE || stripos($url,"my.yahoo.com") == TRUE ) {
      $engine = "Yahoo!";
   } elseif (stripos($url,"aolsearch.aol.ca") == TRUE  || stripos($url,"search.aol.ca") == TRUE ) {
      $engine = "AOL CA";
   } elseif (stripos($url,"aolsearch.aol.com") == TRUE  || stripos($url,"search.aol.com") == TRUE ) {
      $engine = "AOL";
   } else { 
      # create a new string called $strip_http which contains the url minus http://
      $strip_http = substr($url,7);
      # find the position of the first / so we can locate the search engine or referer domain
      $slash_pos = stripos($strip_http,"/");
      # find search engine or referer domain
      $engine = substr($strip_http,0,$slash_pos);
   }  
      
   return addslashes($engine);
      
}# end function parse_se
      
function parse_terms ($url) {
      
   # decoded URL to remove encoding characters
   $url = urldecode($url);
   
   # if referer url is internal, no query terms needed, but determine campaign tracking and put into referer
   
  if (stripos($url,"ahoo") == TRUE ) {
      if (stripos($url,"&p=") == TRUE) {
         $pos = stripos($url,"&p=");
         $query_url = substr($url,$pos+3);
         $end_pos = stripos($query_url,"&");
         if ($end_pos == null) {
            $terms = str_replace("+"," ",substr($query_url,0));
         } else {
            $terms = str_replace("+"," ",substr($query_url,0,$end_pos));
         }
      } elseif (stripos($url,"?p=") == TRUE) {
         $pos = stripos($url,"?p=");
         $query_url = substr($url,$pos+3);
         $end_pos = stripos($query_url,"&");
         if ($end_pos == null) {
            $terms = str_replace("+"," ",substr($query_url,0));
         } else {
            $terms = str_replace("+"," ",substr($query_url,0,$end_pos));
         }
      } else {
         $terms = "";
      }
   } elseif (stripos($url,"?encquery=") == TRUE) {
         $pos = stripos($url,"?encquery=");
         $query_url = substr($url,$pos+10);
         $end_pos = stripos($query_url,"&");
         if ($end_pos == null) {
            $encoded_query = str_replace("+"," ",substr($query_url,0));
         } else {
            $encoded_query = str_replace("+"," ",substr($query_url,0,$end_pos));
         }
         $FU_AOL = implode( "", file( "http://search.aol.com/aolcom/search?encquery=$encoded_query" ));
         preg_match( '/<title>[^>]*"([^"]+)"<\/title>/', $FU_AOL, $decoded_query );
         $terms = $decoded_query[1];
   } else {
      # finds the beginning position of the query terms
      if (stripos($url,"&q=") == TRUE) {
         $pos = stripos($url,"&q=");
         $query_url = substr($url,$pos+3);
      } elseif (stripos($url,"?q=") == TRUE) {
         $pos = stripos($url,"?q=");
         $query_url = substr($url,$pos+3);
      } elseif (stripos($url,"query=") == TRUE) {
         $pos = stripos($url,"query=");
         $query_url = substr($url,$pos+6);
      } elseif (stripos($url,"?s=") == TRUE) {
         $pos = stripos($url,"?s=");
         $query_url = substr($url,$pos+3);
      } elseif (stripos($url,"&s=") == TRUE) {
         $pos = stripos($url,"&s=");
         $query_url = substr($url,$pos+3);
      }

      $end_pos = stripos($query_url,"&");

      # if pos is null, that means there are no query terms
      if ($pos == null) {
         $terms = "";
         return addslashes($terms);
      }

      if ($end_pos == null) {
         $terms = str_replace("+"," ",substr($query_url,0));
      } else {
         $terms = str_replace("+"," ",substr($query_url,0,$end_pos));
      }
   }
   return addslashes($terms);

}

# ********log referer info in mysql database table "logs"************

# won't log for internal ip addresses, or any ip addresses you put here
if (1==1) {
         
   require "/pwfile";
         
   $username = $usern;
   $password = $passw;
   $database = $datab;
            
   #connect to mysql
   $link = @mysql_connect('localhost',$username,$password);
         
   if (!$link) {
      email_error('Could not login to mysql.'.mysql_error());
   }  
      
   # connect to database in mysql
   $db_connect = @mysql_select_db($database);
      
   if (!$db_connect) {
           email_error("Could not establish connection with database.".mysql_error());
   }  
         
   # data to enter into ins_referer logs table; $name is set up above
   $referer = $_SERVER["HTTP_REFERER"];
   $ref_date = date('m/d/Y H:i:s');
   $browser = "";
   if (isset($_SERVER['HTTP_USER_AGENT'])) { 
      $user_agent = get_browser(null,true);
      $browser = $user_agent['browser'];
   }  

   if($referer == "") {
     $referer = "no_referer";
   }  
      
   $referer = addslashes($referer);
   $browser = addslashes($browser);
      
   $searchengine = parse_se($referer);
   $queryterms = parse_terms($referer);
         
   # this will track any campaigns we run, such as links from newsletters, and any others where there is no URL referer, such as browser refresh
   if ((stripos($campaign,"ccn=") !== FALSE)) {
      $referer = substr($campaign,4);
   }
   
   # INSERT statements

   $query = "INSERT INTO forum_table (name, referer, ref_date, searchengine, query, browser) VALUES ('$name','$referer','$ref_date','$searchengine','$queryterms','$browser')";
   $result = @mysql_query($query);

   if (!$result) {
           email_error("Could not insert into $section table.  ".mysql_error());
   }

   @mysql_close();

} #end if internal ip address
# ***********end log  info*****************