Question

I have some code like:

header( Refresh: 15; url=  . $url);

This works fine, except when people are visiting this url via Twitter (posted from a Hootesuite client). Apparently, in all browsers other than IE this works properly. With IE, from the Hootesuite link, this does not refresh properly; a direct link does.

Why?

Answer 1

It turns out that, because the URL we re using sets a cookie, and Hootsuite creates a frame, that IE won t trust the third party cookie (our site). So I ve added some framebuster code to the page, and triggered it to happen "immediately" if the browser is IE. Code is below:

<meta http-equiv="refresh" content="15;url=<?php echo $url ?>" />
<script type="text/javascript">
var timeout = 1;
if (navigator.userAgent.match(/MSIE/)) { timeout = 1; } else { timeout = 14500; }
setTimeout( if (top != self) top.location.replace(self.location.href) , timeout);
</script>

Maybe this will help some other random user out there some day.

Answer 2

I always advocate a combination to avoid problems with the inevitable WebTV user:

Header (as you re doing)
Meta tag (in the HTML head)
Javascript timeout

If the Twitter client is using a link shortener, the type of redirect may be influencing IE in an unanticipated way.

Answer 3

Have you tired setting the location header instead, for example.

$url = "http://www.example.com/";
header("Location: " . $url);

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