Upgrade von 2.0 auf 2.0.2

<?php
/*
Plugin Name: WP-Googlestats
Version: 0.1c
Plugin URI: [URL="http://www.fabriziotarizzo.org/sw/sw-en/#wp-googlestats"]http://www.fabriziotarizzo.org/sw/sw-en/#wp-googlestats[/URL]
Description: With this plugin you can display when and how often Googlebot visits your pages
Author: Fabrizio Tarizzo
Author URI: [URL="http://www.fabriziotarizzo.org/"]http://www.fabriziotarizzo.org/[/URL]
*/
/*  Copyright (C) 2005 Fabrizio Tarizzo (email: [EMAIL="software@fabriziotarizzo.org"]software@fabriziotarizzo.org[/EMAIL])
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*
    CHANGELOG
    0.1c - 2005-06-08 - Corrects possible SQL-injection vulnerability
    0.1b - 2005-03-16 - First public release
*/
function wp_ftr_get_googlestats () {
 global $table_prefix, $wpdb;
 $page = mysql_real_escape_string($_SERVER['REQUEST_URI']);
 $table = $table_prefix . "googlestats";
 $row = $wpdb->get_row("SELECT lastvisit, visits, frequency FROM $table WHERE page='$page'");
 if ($row) {
  $results['lastvisit'] = $row->lastvisit;
  $results['visits'] = $row->visits;
  $results['frequency'] = $row->frequency;
 } else
  $results = null;
 return $results;
}
function wp_ftr_googlestats ($date_format = '', $visited_phrase = 'Googlebot visited this page ', $never_visited_phrase = 'Googlebot never visited this page') {
 if ($date_format == '')
  $date_format = get_settings('date_format');
 $stats = wp_ftr_get_googlestats();
 if ($stats) {
  $mysqldate = date('Y-m-d H:i:s', $stats['lastvisit']);
  $lastvisit = mysql2date($date_format, $mysqldate);
  echo $visited_phrase . $lastvisit;
 } else {
  echo $never_visited_phrase;
 }
}
function wp_ftr_googlestats_hook () {
 global $table_prefix, $wpdb;
 $useragent = mysql_real_escape_string(getenv ("HTTP_USER_AGENT"));
 if (strpos($useragent, "+http://www.googlebot.com/bot.html") || strpos($useragent, "+http://www.google.com/bot.html")) {
  $page = mysql_real_escape_string($_SERVER['REQUEST_URI']);
  $table = $table_prefix . "googlestats";
  $now = time();
  $row = $wpdb->get_row("SELECT lastvisit, visits, frequency FROM $table WHERE page = '$page'");
  if ($row) {
   $lastvisit = $row->lastvisit;
   $visits = $row->visits;
   $frequency = $row->frequency;
   if ($visits == 1) {
    /* This is the SECOND time Google visits this page */
    $frequency = $now - $lastvisit;
    $visits++;
    $lastvisit = $now;
   } else {
    $frequency = (($frequency * ($visits - 1)) + ($now - $lastvisit)) / $visits;
    $visits++;
    $lastvisit = $now;
   }
   $wpdb->query("UPDATE $table SET frequency = $frequency, lastvisit = $lastvisit, visits = $visits WHERE page = '$page'");
  } else {
   /* This is the FIRST time Google visits this page */
   $result = $wpdb->query("INSERT INTO $table (page, lastvisit, visits) VALUES ('$page', $now, 1)");
  }
 }
}
add_action ('shutdown', 'wp_ftr_googlestats_hook');


function wp_ftr_googlestats_adminpage() {
 global $table_prefix, $wpdb;
 $table = $table_prefix . "googlestats";
 if (isset ($_GET['googlestats_resetstats'])) {
  $sql = "UPDATE $table SET visits = 1, frequency = 0";
  //echo "<p>$sql</p>";
  $wpdb->query ($sql);
 }
 $records = 20;
 $searchtype = "mrv";
 if (isset($_POST['googlestats_records']))
  $records = $_POST['googlestats_records'];
 if (isset($_POST['googlestats_searchtype']))
  $searchtype = $_POST['googlestats_searchtype'];
?>
 <div class="wrap">
 <h2>Googlebot</h2>
 <form method="post" action="">
 <p>
  Display the <input type="text" name="googlestats_records" value="<?php echo $records; ?>" /> pages
  <select name="googlestats_searchtype">
   <option value="mrv" <?php if ($searchtype=='mrv') {echo 'selected="selected"';}?>>more recently visited</option>
   <option value="lrv" <?php if ($searchtype=='lrv') {echo 'selected="selected"';}?>>least recently visited</option>
   <option value="mov" <?php if ($searchtype=='mov') {echo 'selected="selected"';}?>>more often visited</option>
   <option value="lov" <?php if ($searchtype=='lov') {echo 'selected="selected"';}?>>least often visited</option>
  </select> by Googlebot <input type="submit" value="Submit" />
 </p>
 </form>
 <p><a href="?page=wp-googlestats.php&amp;googlestats_resetstats=1">Reset statistics</a> (frequency data wil be erased, last visit date will be preserved).</p>
<?php
 $sql = "SELECT page, lastvisit, visits, frequency FROM $table ";
 
 if (($searchtype == 'mov') || ($searchtype == 'lov'))
  $sql .= "WHERE frequency > 0 AND visits >= 3"; //Data about visit frequency are statistically meaningful after at least three visits
  
 $sql .= " ORDER BY ";
 
 switch ($searchtype) {
  case "mrv":
   $sql .= "lastvisit DESC";
   break;
  case "lrv":
   $sql .= "lastvisit";
   break;
  case "mov":
   $sql .= "frequency";
   break;
  case "lov":
   $sql .= "frequency DESC";
   break;
  default:
   $sql .= "lastvisit DESC";
   break;
 }
 $sql .= " LIMIT $records";
 //echo "<p>$sql</p>";   // For debugging purposes
 $rows = $wpdb->get_results ($sql);
 if ($rows) {
 echo '<table style="width:100%"><thead><tr><th>Page</th><th>Visits (*)</th><th>Frequency (*)</th><th>Last visit</th></tr></thead><tbody>';
 $count = 0;
 $rows = (Array)$rows;
 foreach ($rows as $row) {
  $freq = $row->frequency;
  if ($freq && $row->visits >= 3)
   $freq = (int)($freq/3600) . "h " .  (int)(($freq % 3600) / 60) . 'm ' .  ($freq % 3600) % 60 . 's';
  else
   $freq = 'n/a';
  if ($count % 2)
   $row_class = "";
  else
   $row_class = "alternate";
  echo "<tr class=\"$row_class\"><td><a href=\"" . $row->page . '">' . $row->page . '</a></td><td>' .$row->visits . '</td><td>' . $freq . '</td><td>' . date('Y-m-d H:i:s',$row->lastvisit) . '</td></tr>';
  $count++;
 }
 echo '</tbody></table><p>(*) Data about visit frequency are statistically meaningful after at least three visits</p>';
 } else {
  echo '<p>No Google visits yet!</p>';
 } /* $rows */
 echo '</div> <!-- wrap -->';
}
function wp_ftr_googlestats_add_adminpage() {
 add_management_page ("Googlebot", "Googlebot", 8, __FILE__, 'wp_ftr_googlestats_adminpage');
}
add_action ('admin_menu', 'wp_ftr_googlestats_add_adminpage');
?>