Ctags not working with .inc-files - emacs

Question

I would love to use tags inside Emacs, like Vim does. However, I have some problems to set it ## Setup:
GNU Emacs GUI version 25.0.5.1 (x86_64-w64-mingw32)
Compiled from Harroogan Emacs.
Projectile and Helm, using the latest version of Projectile/Helm from MELPA
Exuberant Ctags binary 58 for Windows
Windows 7 x64 bit.
Actions:
The binary ctags.exe is in the PATH, and respons when I call it from command line in Windows with ctags --help.
I tried various things to create a TAGS file, without any result. One thing that I seem to have results, is with the help of the package projectile. But it gives me weird results.
When I'm inside a project, currently the buffer index.php is being opened. Inside that buffer, I regenate tags file with projectile-regenate-tags, with C-c p R.
The messages buffer gives me the following:
Starting a new list of tags tables
Making tags-file-name local to Dev/digiloket3/TAGS while let-bound!
I see the file TAGS is being created in the project root.
The directory root structure is like this:
index.php
.projectile
|- INCLUDE
|- AJAX
|- SCRIPTS
|- PHP
Issue:
Then I visit the tag list with find-tag (g C-]). When I notice I don't get all variables and class/functions that are defined in the project.
When I call the helm-etags-select, I see the directory/file next to the tag. And what confuses me, is that only functions/classes and variables from files in the directory AJAX are being visible in the tag list, and not the variables/classes/functions from the files in the directory PHP.
Then I manually creating the TAGS file with in the command prompt with the right directory on ctags -R.
With no help.
All files in the folder PHP are called ****.inc.
When I renamed one of the files to ****.php, then they're popping up in my ctags table.
So the real issue here is how I could tell projectile/ctags to recognize .inc files as PHP-files, or index it
But I'm also open for another things to create a TAGS table on Windows platform with the ctags available on command line.
Any suggestion?

Answer 1

man ctags for starters (if you can do so in Windows? There is documentation available in any case.)
Assigning file extensions for a language is done with --langmap. Run the following command to see how that argument works:
ctags --langmap=php:+.inc.foo.bar --list-maps=php
So in your case, you would probably use something like this to generate your TAGS file:
ctags -e -R --langmap=php:+.inc
Tangentially, note also the options listed when you run ctags --list-kinds=php. You can then control which of those will be used: ctags --php-kinds=-v-j --list-kinds=php