1、织梦DedeCMS官方2013年6月7号的安全补丁更新的文件修复变量覆盖。在安装目录中找到include/dedesql.class.php用Adobe Dreamweaver CS6打开
2、在第588到第592行的那几段代码(也可以复制以下一小段代码进行搜索)，代码如下：铮喘饿怊$arrs1 = array(0x63,0x66,0x67,0x5f,0x70,0x6f荑樊综鲶,0x77,0x65,0x72,0x62,0x79);$arrs2 = array(0x20,0x3c,0x61,0x20,0x68,0x72,0x65,0x66,0x3d,0x68,0x74,0x74,0x70,0x3a,0x2f,0x2f,0x77,0x77,0x77,0x2e,0x64,0x65,0x64,0x65,0x63,0x6d,0x73,0x2e,0x63,0x6f,0x6d,0x20,0x74,0x61,0x72,0x67,0x65,0x74,0x3d,0x27,0x5f,0x62,0x6c,0x61,0x6e,0x6b,0x27,0x3e,0x50,0x6f,0x77,0x65,0x72,0x20,0x62,0x79,0x20,0x44,0x65,0x64,0x65,0x43,0x6d,0x73,0x3c,0x2f,0x61,0x3e);删除掉或者注释掉，保存上传覆盖。
3、登录DEDE CMS后台进行以下操作：生成>>一键更新网站>>更新所有>>开始更新更新完成后网站就没有底部版权信息Power by DedeCms了
