strpos($_SERVER['HTTP_USER_AGENT'], 'SeznamBot') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'CareerBot/1') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'SiteExplorer/1') !== false ||
+ strpos($_SERVER['HTTP_USER_AGENT'], 'discoverybot/2.0') !== false ||
+ strpos($_SERVER['HTTP_USER_AGENT'], 'SemrushBot/') !== false ||
+ strpos($_SERVER['HTTP_USER_AGENT'], 'archive.org_bot') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'Cityreview Robot') !== false) {
if (isset($_SESSION['uid']))
$_SESSION['robot'] = true;