一直是一个迷，很久之后依然没搞明白，用到的时候总是四处拷贝粘贴。不明白呀不明白，还是拷贝一片文章吧，貌似很全面！嘿嘿 : )
如何配置 .htaccess 文件一直是困扰初学者的难题之一，我在这里特意总结了一下，希望能给初学者启示。以下有关 .htaccess 的配置兼容因虚拟主机而无权修改 apache 设置的情况。

·# PHP settings
·# PHP 配置
·# ====================
·<IfModule php5_module>
·# Adjust memory limit
·# 内存限制
·# ========================
·php_value memory_limit 64M
·# Adjust exec time to prevent overtime running
·# 最大运行时间
·# ================================
·php_value max_execution_time 18000
·# Make sure the default timezone is set
·# Can also be set within application using date_default_timezone_set
·# 默认时区
·# =====================================
·php_value date.timezone "Asia/Shanghai"
·# Short tag for clean view scripts which is still not recommend
·# Because of the xml issue
·# 关闭短标签，防止与 xml 产生兼容性问题
·# ==========================
·php_value short_open_tag off
·# Default charset is utf-8 because of multi languages supportting
·# 默认字符集为 utf-8
·# ===============================
·php_value default_charset "utf-8"
·# To report E_ALL|E_STRICT and show all errors
·# 默认显示所有错误，即 E_ALL|E_STRICT
·# ==============================
·php_value error_reporting "8191"
·# Disable register globals which means nothing in php6
·# 禁止注册超全局变量
·# ===========================
·php_flag register_globals off
·# Disable magic quotes which means nothing in php6
·# 禁止自动转义字符串
·# ===========================
·php_flag magic_quotes_gpc off
·# Disable automatic session start but handled by program
·# e.g. Zend_Session::start()
·# 禁止 session 自动启动，我们交由程序执行，如 Zend_Session::start()
·# =============================
·php_flag session.auto_start off
·# Turn off compatibility with PHP4
·# To avoid the problem when dealing with objects
·# 关闭向上 (php4) 兼容，以防止处理对象时发生问题
·# ======================================
·php_flag zend.ze1_compatibility_mode Off
·# Gzip output
·# Gzip 压缩输出
·# =======================================
·php_flag zlib.output_compression on
·php_value zlib.output_compression_level 9
·# Disable user agent verification to not break multiple image upload
·# 关闭用户代理认证，使得多图片上传等功能不会中断
·# ==================================
·php_flag suhosin.session.cryptua off
·# Output buffering
·# 缓存输出
·# =============================
·php_value output_buffering 4096
·</IfModule>
·# Mime type
·# Mime 类型
·# ====================
·<IfModule mime_module>
·# Add javascript, php and phtml file type if needed
·# 添加 javascript，php 和 phmtl 等文件类型
·# =========================================
·AddType application/x-javascript .js
·AddType application/x-httpd-php .php .phtml
·# For 1and1 hosting issue, we use php5 for all
·# 对于 1and1 主机，我们统一用 php5
·# ==========================
·#AddType x-mapp-php5 .php
·#AddHandler x-mapp-php5 .php
·# For fastcgi mode
·# Fastcgi 模式兼容
·# =========================================
·#Action php5-cgi /cgi-bin/php5-cgi
·#AddHandler php5-cgi .php
·#cgi.fix_pathinfo = 1
·# Default character encoding UTF-8
·# 默认字符集为 utf-8
·# =====================
·AddDefaultCharset UTF-8
·# No ETags for performance optimize
·# 禁止文件 etag 以优化性能
·# ===========
·FileETag none
·</IfModule>
·# Security scan
·# 安全扫描
·# =======================
·<IfModule mod_security.c>
·# Disable POST processing to not break multiple image upload
·# 禁止对 POST 数据进行安全扫描，使不中断多文件上传等功能
·# ===================
·SecFilterEngine Off
·SecFilterScanPOST Off
·</IfModule>
·# Expires by type
·# Expires 期限控制
·# ======================
·<IfModule mod_expires.c>
·# Add further expires for resources
·# 为所有资源设置过时期限
·# =========================================
·ExpiresActive On
·ExpiresDefault "access plus 1 year"
·#ExpiresByType text/css "access plus 1 month"
·#ExpiresByType image/gif "access plus 1 month"
·#ExpiresByType image/jpeg "access plus 1 month"
·#ExpiresByType image/png "access plus 1 month"
·#ExpiresByType application/x-javascript "access plus 1 month"
·</IfModule>
·# Compress by type
·# Compress 根据类型进行压缩过滤
·# ======================
·<IfModule mod_deflate.c>
·# Default filter : deflate
·# 默认过滤器 Deflate
·# =====================
·SetOutputFilter DEFLATE
·# Netscape 4.x has some problems...
·# Netscape 4.x 的一些问题
·# =========================================
·BrowserMatch ^Mozilla/4 gzip-only-text/html
·# Netscape 4.06-4.08 have some more problems
·# Netscape 4.06-4.08 有更多问题
·# =====================================
·BrowserMatch ^Mozilla/4.0[678] no-gzip
·# MSIE masquerades as Netscape, but it is fine
·# MSIE 的问题
·# ===============================================
·BrowserMatch bMSIE !no-gzip !gzip-only-text/html
·# Do not compress images
·# 不压缩图片
·# ====================================================
·SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary
·# The compress level 1(lowest)-9(highest)
·# 压缩级别 1（最低） - 9（最高）
·# ====================================================
·#DeflateCompressionLevel 9
·AddOutputFilterByType DEFLATE text/plain
·AddOutputFilterByType DEFLATE text/html
·AddOutputFilterByType DEFLATE text/xml
·AddOutputFilterByType DEFLATE text/css
·AddOutputFilterByType DEFLATE application/xhtml+xml
·AddOutputFilterByType DEFLATE application/xml
·AddOutputFilterByType DEFLATE application/rss+xml
·AddOutputFilterByType DEFLATE application/atom_xml
·AddOutputFilterByType DEFLATE application/x-javascript
·AddOutputFilterByType DEFLATE application/x-httpd-php
·# Make sure proxies do not deliver the wrong content
·# 确保代理不会重复发送错误数据
·# ======================
·<IfModule mod_headers.c>
·Header append Vary User-Agent env=!dont-vary
·</IfModule>
·</IfModule>
·# Make HTTPS env vars available for CGI mode
·# 使得环境变量在 cgi 模式下有效
·# ==================
·<IfModule mod_ssl.c>
·SSLOptions StdEnvVars
·</IfModule>
·# Directory and index file
·# 文件夹及索引
·# ===================
·<IfModule dir_module>
·# By default allow all access
·# 默认所有人都可以访问
·# ==========================================
·Options -Indexes -MultiViews +FollowSymLinks
·Order allow,deny
·Allow from all
·# Directory default index
·# 文件夹默认索引文件
·# ===========================================
·DirectoryIndex index.php index.html index.htm
·</IfModule>
·# Url rewrite
·# Url 重写
·# ======================
·<IfModule mod_rewrite.c>
·# Rewrite enable
·# Url 重写功能开启
·# ==============
·RewriteEngine On
·# Rewrite base path to your site
·# Url 重写基本路径
·# ===========
·RewriteBase /
·# Forbidden access to htaccess file
·# 禁止访问 .htaccess 文件
·# ============================
·RewriteRule ^.htaccess$ - [F]
·# Url canonicalization for SEO
·# Url 强制重定向
·# =====================================================
·RewriteCond %{HTTP_HOST} ^www.yolansign.com [NC]
·RewriteRule ^(.*)$ http://ff87.com/$1 [L,R=301]
·RewriteCond %{HTTP_HOST} ^www.yolan-sign.com [NC]
·RewriteRule ^(.*)$ http://yolan-ff87.com/$1 [L,R=301]
·# Rewrite for index if request is empty or did not mentioned before
·# 如果请求不存在，或者未预先定义，则重定向到 index.php
·# =====================================================
·RewriteCond %{REQUEST_URI} =""
·RewriteCond %{REQUEST_URI} !^/(library/dojo)/
·RewriteCond %{REQUEST_URI} !^/(library/fckeditor)/
·RewriteCond %{REQUEST_URI} !^/(library/fckeditorPlugins)/
·RewriteCond %{REQUEST_URI} !^/(library/syntaxhighlighter_2.0.320)/
·RewriteRule ^.*$ /public/index.php [NC,L]
·# Rewrite for public if request is not the resource under public or did not mentioned before
·# 如果请求不是一个可用资源，或者未预先定义，则重定向到 public/ 资源目录
·# ===============================================
·RewriteCond %{REQUEST_URI} !^/public/.*$
·RewriteCond %{REQUEST_URI} !^/(library/dojo)/
·RewriteCond %{REQUEST_URI} !^/(library/fckeditor)/
·RewriteCond %{REQUEST_URI} !^/(library/fckeditorPlugins)/
·RewriteCond %{REQUEST_URI} !^/(library/syntaxhighlighter_2.0.320)/
·RewriteRule ^(.*)$ /public/$1
·# Never rewrite for existing files, directories and links
·# 从不为确实存在的文件，文件夹和文件链接进行重定向
·# ==============================================
·RewriteCond %{REQUEST_FILENAME} -s [OR]
·RewriteCond %{REQUEST_FILENAME} -l [OR]
·RewriteCond %{REQUEST_FILENAME} -d
·RewriteRule ^.*$ - [NC,L]
·RewriteRule ^public/.*$ /public/index.php [NC,L]
·</IfModule>