Wordpress htaccess在不更改url的情况下更改默认语言

多语言wordpress站点有多个语言前缀（si、en、de等）

是否有一个.htaccess脚本，可以在不更改url的情况下重写链接1,2到3,4

由于明显的循环，我当前的脚本返回了太多重定向

RewriteEngine On
RewriteBase /

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteCond %{REQUEST_URI} !^/en/
RewriteRule ^(.*)$ /en/$1 [L]

RewriteEngine On
RewriteBase /

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteCond %{REQUEST_URI} !^/en/
RewriteRule ^(.*)$ /en/$1 [L]