Make PhpStorm show changed/modified files in project view

Pressing Alt + 9 (not from numpad) you can get a panel with the changed files.

Another alternative: ctrl + shift + e

As mentioned in comment by LazyOne;

The Project panel does highlight any VCS changes, but to also highlight all parent-folders of changed-files, enable:

File | Settings | Version Control | Show directories with changed descendants

All kudos to LazyOne!

Go to file >> settings >> Editor >> General >> Editor Tabs. Check Mark modified tabs with asterisk Click ok