strpos($_SERVER['HTTP_USER_AGENT'], 'Plukkie/1.4') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], '/Nutch-') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'aiHitBot/1.0') !== false ||
- strpos($_SERVER['HTTP_USER_AGENT'], 'AhrefsBot/2.0') !== false ||
+ strpos($_SERVER['HTTP_USER_AGENT'], 'AhrefsBot/') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'Crawler') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'Acoon') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'Cityreview Robot') !== false) {