Php 使用.htaccess创建谷歌风格的URL

我正在用.htaccess创建谷歌风格的搜索引擎优化规则，最后一部分我遇到了问题

如果您在浏览器中键入google.com/nexus，您将被重定向到www.google.com/nexus/

它添加了www以及尾部斜杠

如何使用.htaccess实现这一点

#Start rewrite engine
RewriteEngine on
RewriteBase /

# Enforce www
# If you have subdomains, you can add them to 
# the list using the "|" (OR) regex operator
RewriteCond %{HTTP_HOST} !^(www|dev|d10|m)\.
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

# Hide the private directory by redirecting the request to index.php
RewriteRule ^(private|\.git) index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [QSA,L]

如果您看到在速度/可扩展性方面需要改进的地方，我们将不胜感激

我的最终解决方案：

RewriteEngine on
RewriteBase /        

# Enforce www
# If you have subdomains, you can add them to 
# the list using the "|" (OR) regex operator
RewriteCond %{HTTP_HOST} !^(www|dev|d10|m)\.    
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

# Add Trailing Slash
RewriteCond %{REQUEST_URI} !(\.[a-zA-Z0-9]{1,5}|/)$
RewriteRule (.*)$ /$1/ [R=301,L]


# Hide the private directory by redirecting the request to index.php
RewriteRule ^(private|\.git) index.php/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [QSA,L]

将example.com替换为您的域

RewriteEngine on
RewriteCond %{HTTP_HOST} ^domain\.com
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=permanent,L] 

将example.com替换为您的域

RewriteEngine on
RewriteCond %{HTTP_HOST} ^domain\.com
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=permanent,L] 

领先www

领先www

谷歌风格的URL。。。这一定是个技术术语？谷歌风格的URL。。。那一定是个专业术语吧？