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copied!<p>Originally from <a href="http://paul.luminos.nl/update/471" rel="noreferrer">http://paul.luminos.nl/update/471</a>:</p> <blockquote> <p>The <a href="http://www.crimsonbase.com/" rel="noreferrer">CrimsonBase website</a> verifies downloads by passing them through a robust PHP script similar to the one published by Andrew Johnson in <a href="http://elements.nukamedia.com/v/Forcing-File-Downloads-with-PHP-Regardless-of-File-Type" rel="noreferrer">his article about PHP-controlled file downloads</a>.</p> <p>Andrew makes a very important comment at the end of the article:</p> <blockquote> <p>"If you compress files with Zlib, mod_deflate and so on the Content-Length header won't be accurate so you'll end up seeing "Unknown size" and "Unknown time remaining" when downloading files."</p> </blockquote> <p>I would like to stress this: if your browser doesn't appear to be obeying the headers generated by your PHP script—especially <code>Content-Length</code>—it is fairly likely that Apache's <code>mod_deflate</code> extension is enabled.</p> <p>You can easily disable it for a single script using the following line in an applicable <code>.htaccess</code> file:</p> <pre><code>SetEnvIfNoCase Request_URI ^/download\.php no-gzip dont-vary </code></pre> <p>where download.php is here assumed to be in the download script located in the server's root directory path (e.g. <code>www.crimsonbase.com/download.php</code>). (That's because the regular expression is <code>^/download\.php</code>.)</p> </blockquote>

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