.htaccess deny access to all except to one file

How can I deny access to a complete folder and sub-folders, with the exception of one file? That file is: toon.php and resides in the same folder.

What does htaccess Deny from all do?

You just need to add a few commands to . htaccess to make it happen. For example, deny from all is a command that will allow you to apply access restrictions to your site.

Order Allow,Deny <FilesMatch "^toon\.php$"> Allow from all </FilesMatch>

That is probably the most efficient that you can get.

AuthGroupFile /dev/null AuthName "Private Area" AuthType Basic AuthUserFile .htpasswd require valid-user   <Files "toon.php"> Allow from all Satisfy Any  </Files>

Works for me. Dont' forget to configure the .htpasswd file.