总结一下隐藏index.php文件的步骤 
1.开启apache的mod_rewrite模块 
      去掉loadmodule rewrite_module modules/mod_rewrite.so前的“#”符号 
      确保<directory "..."></directory>中有“allowoverride all” 
2.在项目中的/protected/config/main.php中添加代码：
'components'=>array( 
                ... 
                'urlmanager'=>array( 
                      'urlformat'=>'path', 
                      'showscriptname'=>false,//注意false不要用引号括上 
                'urlsuffix'=>'.html', 
                      'rules'=>array( 
                          'sites'=>'site/index', 
                      ), 
                ), 
                ... 
            ),
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3.在与index.php文件同级目录下添加文件“.htaccess”，内容如下：
options +followsymlinks 
        indexignore */* 
        rewriteengine on
# if a directory or a file exists, use it directly 
        rewritecond %{request_filename} !-f 
        rewritecond %{request_filename} !-d
# otherwise forward it to index.php 
        rewriterule . index.php
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这样就可以实现隐藏index.php入口文件了。