How can I add volt syntax checking in PHPStorm

Right click on a .volt file in the project tab. Click on associate with a file type. Choose twig.

In PHPStorm, click File -> Settings

On the left side of the options click Editor -> File Types

On the list that appears on the right, scroll down and select Twig

In the bottom panel, click the + button to add a new wildcard and add

*.volt

Click OK and then OK again.