Because php5.4 compression not normal work. So I have to enable IIS7.5 system compression. ok. now please check the www.ongod.org/test/phpinfo.php site. just now I have close IIS compression. PHP5.4 sure can't work with zlib.output_compression. windows php enable by default. Now I have study try building php5.4 x64 by myself. but I can't building php ext. only building success php 5.4.1 main code.Who will tell me how building full php5.4.x ? ------------------ Original ------------------ From: "Simon Schick"<simonsimcity@xxxxxxxxxxxxxx>; Date: Wed, Mar 21, 2012 03:21 PM To: "小鱼虾"<info@xxxxxxxxxx>; Cc: "php-general"<php-general@xxxxxxxxxxxxx>; Subject: Re: [PHP] Bug zlib.output_compression not normal work in IIS7.5 2012/3/19 小鱼虾 <info@xxxxxxxxxx> > > How I do fix it ? > > > https://bugs.php.net/bug.php?id=61434 > Hi, I got a rough overview of the conversation in the bug-tracker ... You were always talking about a tool you used to test the gzip-compression ... but why not test it natively? Using Firefox (with the extension Firebug) or Safari / Chrome for example you can easily view the respond-header from the server and get more info out of that. Just press F12, click on the network-tab, select your request and search in the response-header for "Content-Encoding: ..." I would write my own small php-test-script where you just output some text. Then you're sure that not other code is doing something strange. Another possible problem: Is the extension zlib enabled at all? The documentation says that it's disabled by default ... http://www.php.net/manual/en/zlib.installation.php Bye Simon