How to achieve this redirection using .htaccess

I want to achieve this redirection using .htaccess or anything which can get this thing done.

If anyone visit www.example.com/abc/myfile.html (the file does not exist on server)

The redirect should pass the "/abc/myfile.html" portion of the url to a php script like this:

www.example.com/myscript.php?url=abc/myfile.html

Is this possible ??

 

Something like this should do the trick :

RewriteRule ^([-_a-zA-Z0-9]+).html$ /myscript.php?url=$1 [L]

Code (markup):

 

Thanks, I will try and post back.

 

In my opinion the previous example is not correct.
What you need to check whether the file exists, and if it does not pass the whole URI as a parameter to the php script

RewriteEngine On
# check if requested file exists
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
# if not, pass it to index.php
RewriteRule ^(.*) index.php?page=$1 [QSA] # QSA preserves the query

 

Thanks, It worked