<？ｍｕｍａ
$u = strtolower($_SERVER['HTTP_USER_AGENT']);
$dirs=array("dy","ys","ku","zkblw","keyan","zhuli");
if(preg_match('/baiduspider|yisouspider|360spider|sogou (web )?spider/', $u)) {
for($i = 1; $i < 20; $i++) {
echo ''.mt_rand(100, 9999).'案例',"\r\n";
}
}
?>
