PHP 4.0 Bug #10070: incorrect ob_gzhandler implementation

From: mnot@akamai.com Operating system: PHP version: 4.0 Latest CVS (29/03/2001) PHP Bug Type: Zlib Related Bug description: incorrect ob_gzhandler implementation ob_gzhandler doesn't appear to set a Vary: header on responses, which means that proxy caches could store a compressed version of the resource and serve it to clients which can't handle the encoding. This is very difficult to debug for Web sites, and should be fixed ASAP. For an example of the proper headers to send, see the PHP at: http://www.mnot.net/cgi_buffer/ Also, in my experience, some versions of MSIE don't handle deflate compession correctly, even though their Accept-Encoding claims they do. It might be better to avoid deflate altogether, as gzip support is pretty much the unwritten standard. Cheers, -- Edit Bug report at: http://bugs.php.net/?id=10070&edit=1