今天在看《高性能php應(yīng)用開發(fā)》這本書，說(shuō)道如何啟用mod_deflate：

啟用如下模塊：

LoadModule deflate_module modules/mod_deflate.so

然后加入指令：

AddOutputFilterByType DEFLATE text/html text/plain text/css text/xml text/javascript

即可。

但是發(fā)現(xiàn)老是出錯(cuò)，

 Invalid command 'AddOutputFilterByType', perhaps misspelled or defined by a module not included in the server configuration 

去百度查看下，未果，之后發(fā)現(xiàn)官方有段話：

Invalid command 'AddOutputFilterByType', perhaps misspelled       or defined by a module not included in the server configuration        -AddOutputFilterByType       has moved from the core to mod_filter, which must be loaded.

原來(lái)，除了啟用deflate之外，還要啟用mod_filter，找到這句：

LoadModule filter_module modules/mod_filter.so

去除前面的分號(hào)，終于好了！