此问题已在此处有答案：

Reference: mod_rewrite, URL rewriting and "pretty links" explained（5个答案）
上个月关门了。
重定向并使用**.htaccess文件重写我的URL**？
重复的内容，2链接相同的内容。
https://www.pooeen.com/viewtopic.php?t=82
请重定向到下面的URL
https://www.pooeen.com/82/
我期待着尽快收到你的来信。
提前感谢您的宝贵合作。

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} ^176\.9\.11\.218
RewriteRule ^(.*)$ https://www.pooeen.com/$1 [R=301,L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^pooeen\.com [OR]
RewriteCond %{HTTP_HOST} ^176\.9\.11\.218 [OR]
RewriteCond %{HTTP_HOST} ^mail\.pooeen\.com
RewriteRule ^(.*)$ https://www.pooeen.com/$1 [R=301,L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{THE_REQUEST} ^GET\ .*/index\.(php|html)\ HTTP
RewriteRule ^(.*)index\.(php|html)$ /$1 [R=301,L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{THE_REQUEST} \s/(viewtopic\.php)\?f=(?:[^&]*)&(t=\d+)\s [NC]
RewriteRule ^ /%1?%2 [R=301,L]
</IfModule>

<Limit GET POST>
order deny,allow
deny from all
allow from all
</Limit>

<Limit PUT DELETE>
order deny,allow
deny from all
</Limit>

<Files .htaccess>
order allow,deny
deny from all
</Files>

DirectoryIndex index.php

Options -Indexes