Php .htaccess mod_rewrite导致500而不是404（无限内部重定向）

我的目标是从url中删除.php扩展，并创建语义url多语言站点。以下是我的.htaccess规则：

# Turn mod_rewrite on
RewriteEngine On

#Remove .php extensions from files
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{DOCUMENT_ROOT}/$1\.php -f
RewriteRule ^(.+?)/?$ /$1.php [L]

#Create Semantic url
RewriteRule  ^event/([A-Za-z0-9-\+]+)/([A-Za-z0-9-\+]+)/?$  calendar?region=$1&news_id=$2 [L,NC]

#Handle language switch.
RewriteRule ^(ru)/(.*)$  $2?sitelang=2 [L,QSA]
RewriteRule ^(ru)$  $1?sitelang=2 [L,QSA]
RewriteRule ^(en)/(.*)$  $2?sitelang=1 [L,QSA]
RewriteRule ^(en)$  $1?sitelang=1 [L,QSA]
RewriteRule ^(.*)$  $1?sitelang=1 [L,QSA]

#404 Document /404.php
ErrorDocument 404 /404

所以我有一些情况，当这个规则起作用的时候，也有不起作用的时候。以下是一些有效的方法：

• domain.com/ru/event/region/some event name
• domain.com/event/region/some-event-name

而那些不起作用的（当我添加一些内容时，粗体），会导致500个错误：

• domain.com/events/region/some事件名称
• domain.com/events/region/some事件名称/
• domain.com/event/region/some event name/something

---

您需要停止现有文件和目录的规则执行。你的规则如下：

#404 Document /404.php
ErrorDocument 404 /404

# Turn mod_rewrite on
RewriteEngine On

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]

#Remove .php extensions from files
RewriteCond %{DOCUMENT_ROOT}/$1\.php -f
RewriteRule ^(.+?)/?$ /$1.php [L]

#Create Semantic url
RewriteRule ^event/([\w-]+)/([\w-]+)/?$ calendar?region=$1&news_id=$2 [L,NC,QSA]

#Handle language switch.
RewriteRule ^(ru)/(.*)$  $2?sitelang=2 [L,QSA]
RewriteRule ^(ru)$  $1?sitelang=2 [L,QSA]
RewriteRule ^(en)/(.*)$  $2?sitelang=1 [L,QSA]
RewriteRule ^(en)$  $1?sitelang=1 [L,QSA]
RewriteRule ^(.*)$  $1?sitelang=1 [L,QSA]

---

感谢@anubhava为我指明了正确的方向。有你的帮助，我能解决我的问题。这是可行的解决方案

#404 Document /404.php
ErrorDocument 404 /404.php

# Turn mod_rewrite on
RewriteEngine On

#Remove .php extensions from files
RewriteCond %{DOCUMENT_ROOT}/$1\.php -f
RewriteRule ^(.+?)/?$ /$1.php [L]

RewriteCond %{REQUEST_FILENAME} !-f [OR]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^ - [L]

#Create Semantic url
RewriteRule ^event/([\w-]+)/([\w-]+)/?$ calendar?region=$1&news_id=$2 [L,NC,QSA]

#Handle language switch.
RewriteRule ^(ru)/(.*)$  $2?sitelang=2 [L,QSA]
RewriteRule ^(en)/(.*)$  $2?sitelang=1 [L,QSA]
RewriteRule ^(.*)$  $1?sitelang=1 [L,QSA]