Making a clean URL with php arguments in it - php

Question

So far, I have made my .htaccess to let me remove the ".php" extension, but that isn't enough for me. I want to be so that example.com/test?id=asdfjK could be able to be accessed as example.com/asdfjK. So that it accepts only the main php get argument in the URL (I don't know what to call them.
Here is my .htaccess file so far:
RewriteEngine On
RewriteRule ^([a-zA-Z0-9_]+)$ index.php?page=$1
RewriteRule ^([a-zA-Z0-9_]+)/$ index.php?page=$1
RewriteRule ^([a-zA-Z0-9_]+)$ /image.php?ID=$1
RewriteRule ^([a-zA-Z0-9_]+)/$ /image.php?ID=$1

Answer 1

There's no way to differentiate between what gets sent to index.php and what gets sent to image.php. The patterns are identical, which means everything will match the first one and nothing will get routed to image.php. You've got to add something to the url so that you can match against it. Something like:
http://example.com/image/abcdefg123456
And that means the htaccess file would look something like:
RewriteEngine On
RewriteRule ^([a-zA-Z0-9]+)/?$ index.php?page=$1 [L,QSA]
RewriteRule ^image/([a-zA-Z0-9]+)/?$ image.php?page=$1 [L,QSA]

Answer 2

The PHP arguments after the question mark are called the "query string".
Try something like this:
RewriteEngine On
RewriteCond %{REQUEST_URI} !^/index\.php
RewriteRule ^([a-zA-Z0-9]+)$ /index.php?page=$1 [L]
This should redirect anything from:
http://example.com/abc123
To:
http://example.com/index.php?page=abc123
See also:
htaccess rewrite for query string
.htaccess rewrite query string as path
How to prevent infinite redirect loop on htaccess?