Detecting the {{nobots}} template

$talk = get_page_contents('User_talk:' . $user);
if (preg_match('%' . preg_quote('{{nobot}}') . '%iS',$talk)) {
    preg_match_all('%<nowiki>(.*?)' . preg_quote('{{nobots}}') . '(.*?)</nowiki>%msi', $talk, $nowikimatches);
    preg_match_all('%' . preg_quote('{{nobots}}') . '%msi', $talk, $nobotsmatches);
    if (sizeof($nowikimatches[0]) < sizeof($nobotsmatches[0])) {
        echo $user . '\'s talk page does not allow bots. Skipping...' . "\n";
        return;
    }
}