不罗嗦了，直接贴出代码：
（一）在主题目录的functions.php添加如下代码：

1. //算术验证码by vfhky
2. function spam_provent_math(){
3. $a=rand(5,15);
4. $b=rand(5,15);
5. echo "<input type='text' name='sum' id='sum' size='22' tabindex='3' value='动手又动脑，哦也 ！' onfocus='if (this.value != "") {this.value = "";}' onblur='if (this.value == "") {this.value = "动手又动脑，哦也 ！";}' /> = $a + $b （<font color='#0088DD'>防止机器人评论</font>）" ."<input type='hidden' name='a' value='$a'/>" ."<input type='hidden' name='b' value='$b'/>";
6. }
7. function spam_provent_pre($spam_result){
8. $sum=$_POST['sum'];
9. switch($sum){
10. case $_POST['a']+$_POST['b']:break;
11. case null:wp_die('亲，算个结果撒');break;
12. default:wp_die('算错啦⊙﹏⊙b汗');
13. }
14. return $spam_result;
15. }
16. //注册用户or管理员则不需要验证
17. if(!is_user_logged_in() && $comment_data['comment_type']==''){
18. add_filter('preprocess_comment','spam_provent_pre');
19. }

（二）在主题目录下的comments.php(不同的主题可能评论框的位置不同，有的主题可能在functions.php里面)中调用上述代码：

1. <?php if(!isset($_COOKIE['comment_author_email_'.COOKIEHASH]))spam_provent_math();?>

效果如下图示：

新版WordPress在被IE6访问时会跳出红色警告框并提示升级，而其它“过时”的浏览器会导致橙色警告，并同样提供升级主流浏览器的链接。

IE6最早在2001年8月发布，在2009年4月14日光荣退休，但扩展支持依然要到2014年，它的寿命之长，是浏览器发展史上的奇迹。

Fatal error: Call to undefined function wp_dashboard_setup() in /home/vpsee/wordpress/wp-admin/index.php on line 15

关闭 APC 后这个问题就消失了，只要一打开 APC 就报错，进一步调查把问题缩小到一个 APC 配置参数上 apc.include_once_override=1，如果设置成 apc.include_once_override=0 就没有问题。根据 APC 参考手册的说明，apc.include_once_override 参数是用来 Optimize include_once() and require_once() calls and avoid the expensive system calls used. 一般的建议是设置成0（关闭这个选项）。现在解决办法有两个，一个是设置 apc.include_once_override 为 0（这样会影响到所有网站，所有 PHP 站都不能用到 apc.include_once_override 这个优化了）：

# vi /etc/php.d/apc.ini

...
apc.include_once_override = 0
...

另一个办法是修改 WordPress 文件（这样只会影响到一个 WordPress 网站），打开 wp-admin/index.php 文件找到 require_once(ABSPATH . ‘wp-admin/includes/dashboard.php’); 这行注释掉后修改成如下：

# vi /home/vpsee/wordpress/wp-admin/index.php

...
/* require_once(ABSPATH . 'wp-admin/includes/dashboard.php'); */
require_once('./includes/dashboard.php');
...

转自：http://www.vpsee.com/2011/05/a-small-apc-problem-with-wordpress/

1. 1. 激活compress模块，将lightppd.conf文件的mod_compress的注释去掉
2. 2. 配置压缩文件存放目录compress.cache-dir，注意运行lighttpd的用户需要有这个目录的读写权限，压缩文件的类型compress.filetype
3. 3. 将动态生成的php也gzip，修改php.ini，加上zlib.output_compression = On和zlib.output_handler = On
4. 4. 重启lighttpd

配置cache主要是使用expire模块

1. 1. 激活expire模块，将lightppd.conf文件的mod_expire的注释去掉
2. 2. 配置需要设置过期时间的host
3. 3. 重启lighttpd

最后配置如下：

$HTTP["host"] =~ "blog.xiaocaihua.com$" {
 
#其他配置...
compress.cache-dir  =  "/home/flymouse/lighttpd/compress/"
compress.filetype  =  ("text/plain", "text/html", "application/x-javascript", "text/css", "application/javascript", "text/javascript")
$HTTP["url"] =~ "(.png|.css|.js|.jpg|.gif)$" {
expire.url = ( "" => "access 2 months" ) # 配置静态文件缓存2个月
}
}

最后的Response header应该如下图，有Content-Encoding和Expires，max-age头。

                 http响应的头信息 

参考

1. 1. mod_compress 文档
2. 2. mod_expire 文档

转自 ：小菜花

PHPCMS：

location / {
###以下为PHPCMS 伪静态化rewrite规则
rewrite ^(.*)show-([0-9]+)-([0-9]+)\.html$ $1/show.php?itemid=$2&page=$3;
rewrite ^(.*)list-([0-9]+)-([0-9]+)\.html$ $1/list.php?catid=$2&page=$3;
rewrite ^(.*)show-([0-9]+)\.html$ $1/show.php?specialid=$2;
}

PHPWIND：
location / {
####以下为PHPWind 伪静态化rewrite规则
rewrite ^(.*)-htm-(.*)$ $1.php?$2 last;
rewrite ^(.*)/simple/([a-z0-9\_]+\.html)$ $1/simple/index.php?$2 last;
}

WordPress的nginx伪静态规则：

location / {
index index.html index.php;
if (-f $request_filename/index.html){
rewrite (.*) $1/index.html break;
}
if (-f $request_filename/index.php){
rewrite (.*) $1/index.php;
}
if (!-f $request_filename){
rewrite (.*) /index.php;
}
}

ECSHOP的nginx伪静态规则就比较复杂庞大了：

if (!-e $request_filename)
{
rewrite “^/index\.html” /index.php last;
rewrite “^/category$” /index.php last;
rewrite “^/feed-c([0-9]+)\.xml$” /feed.php?cat=$1 last;
rewrite “^/feed-b([0-9]+)\.xml$” /feed.php?brand=$1 last;
rewrite “^/feed\.xml$” /feed.php last;
rewrite “^/category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$” /category.php?id=$1&brand=$2&price_min=$3&price_max=$4&filter_attr=$5&page=$6&sort=$7&order=$8 last;
rewrite “^/category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)(.*)\.html$” /category.php?id=$1&brand=$2&price_min=$3&price_max=$4&filter_attr=$5 last;
rewrite “^/category-([0-9]+)-b([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$” /category.php?id=$1&brand=$2&page=$3&sort=$4&order=$5 last;
rewrite “^/category-([0-9]+)-b([0-9]+)-([0-9]+)(.*)\.html$” /category.php?id=$1&brand=$2&page=$3 last;
rewrite “^/category-([0-9]+)-b([0-9]+)(.*)\.html$” /category.php?id=$1&brand=$2 last;
rewrite “^/category-([0-9]+)(.*)\.html$” /category.php?id=$1 last;
rewrite “^/goods-([0-9]+)(.*)\.html” /goods.php?id=$1 last;
rewrite “^/article_cat-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$” /article_cat.php?id=$1&page=$2&sort=$3&order=$4 last;
rewrite “^/article_cat-([0-9]+)-([0-9]+)(.*)\.html$” /article_cat.php?id=$1&page=$2 last;
rewrite “^/article_cat-([0-9]+)(.*)\.html$” /article_cat.php?id=$1 last;
rewrite “^/article-([0-9]+)(.*)\.html$” /article.php?id=$1 last;
rewrite “^/brand-([0-9]+)-c([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)\.html” /brand.php?id=$1&cat=$2&page=$3&sort=$4&order=$5 last;
rewrite “^/brand-([0-9]+)-c([0-9]+)-([0-9]+)(.*)\.html” /brand.php?id=$1&cat=$2&page=$3 last;
rewrite “^/brand-([0-9]+)-c([0-9]+)(.*)\.html” /brand.php?id=$1&cat=$2 last;
rewrite “^/brand-([0-9]+)(.*)\.html” /brand.php?id=$1 last;
rewrite “^/tag-(.*)\.html” /search.php?keywords=$1 last;
rewrite “^/snatch-([0-9]+)\.html$” /snatch.php?id=$1 last;
rewrite “^/group_buy-([0-9]+)\.html$” /group_buy.php?act=view&id=$1 last;
rewrite “^/auction-([0-9]+)\.html$” /auction.php?act=view&id=$1 last;
rewrite “^/exchange-id([0-9]+)(.*)\.html$” /exchange.php?id=$1&act=view last;
rewrite “^/exchange-([0-9]+)-min([0-9]+)-max([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$” /exchange.php?cat_id=$1&integral_min=$2&integral_max=$3&page=$4&sort=$5&order=$6 last;
rewrite ^/exchange-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$” /exchange.php?cat_id=$1&page=$2&sort=$3&order=$4 last;
rewrite “^/exchange-([0-9]+)-([0-9]+)(.*)\.html$” /exchange.php?cat_id=$1&page=$2 last;
rewrite “^/exchange-([0-9]+)(.*)\.html$” /exchange.php?cat_id=$1 last;
}

商城程序shopex的nginx伪静态规则：

location / {
if (!-e $request_filename) {
rewrite ^/(.+\.(html|xml|json|htm|php|jsp|asp|shtml))$ /index.php?$1 last;
}
}