How do I tell PhpStorm to stop open a file with an external editor?

Question

For some reasons, in my current PHP Project in PhpStorm, when I click on one of my file in my project explorer panel, PhpStorm opens it in an external editor. I have others files with the same extension that opens correctly in PhpStorm.

How can I tell PhpStorm to stop doing that ?

Answer 1

1. Settings/Preferences | Editor | File Types

2. Find Files Opened in Associated Application entry in the top list

3. Remove unwanted entry that affects that file from the bottom list (Registered Patterns).