Apache Link to PHP run application/x-httpd-php *

You are barking up the wrong tree with AddType.

By the sounds of it you are trying to implement extensionless URLs.

You can do this by simply enabling MultiViews. For example:

Options +MultiViews

Now, when you request /file it will serve /file.php (or /file.html) if it exists. Like "magic".

Reference: https://httpd.apache.org/docs/2.4/content-negotiation.html

OR, use mod_rewrite to internally rewrite the URL. For example:

Options +FollowSymLinks -MultiViews

RewriteEngine On

# Internally rewrite "/file" to "/file.php"
RewriteRule ^file$ file.php [L]

The above rewrites just the specific request URL /file to /file.php. It does not first check whether /file.php exists, so in this respect it is unconditional.

However, exactly how you implement this will depend on your file structure and possibly your existing directives. More generally, to rewrite any request for an extensionless file using mod_rewrite, you would change the above RewriteRule to something like:

# Internally rewrite "/<something>" to "/<something>.php"
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule !.w{2,4}$ %{REQUEST_URI}.php [L]

The above rewrites any request that does not have, what looks like, a file extension and does not map to a physical directory by appending a .php extension.

Reference: https://httpd.apache.org/docs/2.4/mod/mod_rewrite.html

However, MultiViews and mod_rewrite do not necessarily play well together, so if you are using mod_rewrite you should probably disable MultiViews