php - Redirect if Browser and OS headers are blank

Question

A particular page is getting hit by someone using a block of IPs. Interestingly their headers are showing no information on their operating system or browser. How would I go about redirecting users that do not have browser or OS information in their http headers?

Is there an easy way to do this with some php?

Answer 1

我同意 Colin Morelli 的评论：

馊主意。许多人有隐藏User-Agent标题的浏览器扩展，因为他们担心隐私。

但是，如果您想这样做，这很容易：

if (!isset($_SERVER['HTTP_USER_AGENT']) {
    // Redirect here.
    header('Location: http://example.com');
    exit;
}