| Re: Generating "download" pages [message #186422 is a reply to message #186408] |
Sat, 19 July 2014 23:04   |
Arno Welzel
Messages: 317
Registered: October 2011
Karma:
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Senior Member |
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Christoph M. Becker, 2014-07-19 19:43:
> Thomas 'PointedEars' Lahn wrote:
>
>>> On response to a trigger on one web page, I want to be able to generate
>>> and display a new web page, /and/ at the same time, send an associated
>>> file as a download.
>>>
>>> How do I do this with PHP?
>>
>> There are several ways. Another is:
>>
>> <?php
>> header('Content-Disposition: attachment; filename="foo.bar"'); …
>> header('Location: http://download.example/foo.bar');
>> ?>
>>
>> displayed content
>
> How is that supposed to work? HTTP can only deliver a single response,
> and AFAIK there is no such thing as multipart responses for HTTP.
It will not work - the browser will likely follow the Location header
and just ignore the Content-Disposition.
> Using a Refresh header instead of Location might work, but on one hand
> the Refresh is not part of the HTTP/1.1 specification (CMIIW), and on
> the other the effect is not exactly what the OP asked for. It seems to
> me the only way to get this behavior would be in combination with client
> side scripting, what would be on-topic for comp.lang.javascript, for
> instance.
Yep - it's right, a Refresh header is not part of HTTP/1.1 - but most
browsers will still accept it (at least when using <meta
http-equiv="refresh" ...>) and behave as expected. As a fall back one
should offer a direct link within the displayed content anyway - since
client side scripting may also not work if the user did not enable it.
--
Arno Welzel
http://arnowelzel.de
http://de-rec-fahrrad.de
http://fahrradzukunft.de
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