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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.php
Subject: Re: Generating "download" pages
Date: Fri, 18 Jul 2014 17:39:18 +0200
Organization: PointedEars Software (PES)
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Lew Pitcher 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.
>  
> The user selects (in this case) "Export recipes" (I'm developing a
> PHP/MySQL recipe management application), which causes
> 1) the page to change to a "Download in progress" page, and
> 2) a file (in this case, an XML file containing the recipes) to be sent to
> the client.
> 
> Is this doable?

Yes.  There are plenty of productive examples on the Web, for example when 
you download from sourceforge.net and use the additional download link 
(client-side scripting will trigger the download dialog automatically, but 
you can cancel that).

> 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

This not just a (PHP) language feature, it is using a language-independent 
HTTP feature.  You can use browser developer tools to inspect the HTTP 
response headers, then use the corresponding PHP functions to achieve the 
same.

<http://devtoolsecrets.com/>
<http://php.net/header>
<http://tools.ietf.org/html/rfc2616>

Next time, do your homework, please.


PointedEars 
-- 
> If you get a bunch of authors […] that state the same "best practices"
> in any programming language, then you can bet who is wrong or right...
Not with javascript. Nonsense propagates like wildfire in this field.
  -- Richard Cornford, comp.lang.javascript, 2011-11-14