$bot = 'bot';
    $bot2 = 'Yandex|Googlebot|slurp|yahoo|Teoma|Scooter|ia_archiver|Lycos|Rambler|Mail.Ru|Aport|WebAlta|ezooms|nigma|bingbot|Twitterbot';
    $bot3 = 'Gigabot|trendictionbot|msnbot|jeeves|webcrawler|turnitinbot|technorati|findexa|findlinks|gaisbo|zyborg|surveybot|bloglines|blogsearch|pubsub|syndic8|userland|become.com';
    if( preg_match("~$bot|$bot2~i", $_SERVER['HTTP_USER_AGENT']) ) {
            wp_send_json(array('error' => 'BOT'));
    }