您是否尝试过.htaccess选项"AddCharset".它应该可以在.htaccess文件所在的父目录以及所有子目录上工作.

Have you tried the .htaccess option "AddCharset". It should work on the parent directory of where the .htaccess file is located plus all sub directories.

AddCharset UTF-8 .php

http://www.w3.org/International/questions/qa-htaccess-charset