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Posted by Dave on 11/18/90 11:43
Actually, what I ended up doing was to use curl to request a very small
graphic from the site.
Used curl timeout to control the redirect time and got just the header.
$timeout = 10;
$testurl = "www.example.com/small.gif";
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_URL,$testurl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
$source = curl_exec($ch);
curl_close($ch);
if ($source!="") // optionally I could have tested for HTTP status, 404,
301, etc.
$url = "http://www.example.com/";
else
$url = "http://www.example.net/";
header("Location: $url");
Thanks to all who responded,
Dave
"Karl Groves" <karl@NOSPAMkarlcore.com> wrote in message
news:Xns9794A94E12584karlkarlcorecom@216.196.97.136...
> Jerry Stuckle <jstucklex@attglobal.net> wrote in
> news:ZsGdnYorq-4TNrTZ4p2dnA@comcast.com:
>
>> Dave wrote:
>>> Hi All,
>>>
>>> Can anyone suggest a reliable solution to php redirect?:
>>>
>>> header("Location: $redir_url");
>>> if the above times out in $timeout seconds
>>> header("Location: $alt_redir_url");
>>>
>>> Many thanks,
>>>
>>> Dave
>>>
>>>
>>
>> Hi, Dave,
>>
>> Sorry, you can't do it.
>>
>> When you send the redirect, the request goes to the browser. The
>> browser is now responsible for fetching the new page. Your script is
>> no longer "in the loop".
>>
>> Maybe you could do it with javascript - I haven't tried. But that
>> would have its own problems (i.e. user has disabled javascript).
>>
>
> Actually, what could be done is to check for a good response at new URL
> with fsockopen() and if successful, do the redirect, otherwise go to the
> alternate.
>
> To the OP:
> peruse the info here: http://us2.php.net/function.fsockopen
>
>
>
> --
> Karl Groves
> http://karlcore.com
> http://chevelle.karlcore.com
>
> Accessibility Discussion List: http://smallerurl.com/?id=6p764du
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