如何告诉mod_rewrite只在输入特定网址时重写？

Question

I am having an issue with my .htaccess / .php files I set up my web project in a way that it's split into 3 levels:

• base level (mywebsite.com)
• pages (mywebsite.com/news)
• subpages/articles (mywebsite.com/news/123)

And all three are working as expected, here's my .htaccess:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/?$ index.php?page=$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/([^/]+)/?$ index.php?page=$1&sub=$2 [L]

I have to admit, I am not very good with the Regular Expressions for .htaccess/mod_rewrite as it is something I have done very rarely up to this point.

However my issue now is, that people dont get sent to a 404 error page if the page id (see $1) is not valid, like people can technically enter mywebsite.com/asdasdasd/ and it'll bring them (obviously) to the index.php, now my question is, can this be done some way in the .htaccess or should I just use php to check if the id they entered is valid or not? I did see that there's a thing called rewriteMap but I dont want to change the httpd.conf

Can anyone help?

Answer 1

can this be done some way in the .htaccess or should I just use php to check if the id they entered is valid or not?

I don't think this is programming problem but logical one.

• Apache doesn't know what pages are valid /news /contact /help etc.
• PHP knows what pages are valid

So you have only two options

a) Specify every single possible site in .htaccess which is terrible practice

b) Check in PHP is page valid then throw 404 which is only one reasonable solution.