apache mod_rewrite 500内部错误

Question

I am trying to change

http://localhost/inbox?pg=2 to

http://localhost/inobox/2

and I got a working code as below

Options +FollowSymLinks -MultiViews
RewriteEngine On
RewriteBase /

RewriteRule ^/?inbox/(\d+)$ /inbox?pg=$1 [QSD,L]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [QSA,L]

however if I change http://localhost/inbox/2 to

http://localhost/inbox/2.5 or http://localhost/inbox/ I get 500 error and I am not able to figure out what is causing it. I am already checking on the php end for empty var or non numeric value however, this 500 error kicks in everytime I change it as above, does anyone know how can I redirect back to inbox.php if one of these situations happen?

log file reads r->uri = /inbox/2.5.php.php.php.php.php.php.php.php.php.php

redirected from r->uri = /inbox/2.5.php.php.php.php.php.php.php.php.php

Answer 1

In RewriteRule ^/?inbox/(\\d+)$ /inbox?pg=$1 [QSD,L] the \\d matches only numeric characters 0-9 and not the . , so 2.5 does not match this rule. To match both 2 and 2.5, use ([\\d.]+) instead.