PHP标头从外部文件重定向？

Question

I'm not sure if this is possible or how to implement it.

I have an HTML only file that onload does an ajax request to a PHP file and the PHP script returns the main content of the page. What I'm wondering if its possible is.. when I send the request to PHP can PHP redirect the requesting page to a different page when the session/cookie isn't set?

Answer 1

If you change the script to return JSON instead of HTML, you can set a flag that your callback will recognize, redirecting if necessary. With jQuery:

<script>
    $.post('/some/script.php', function(response) {
        if (response.redirect) {
            window.location = 'new/location';
        } else {
            // update HTML content
        }
    });
</script>