Unexpected keyword or identifier for print

[IlirEdis]

I'm trying to implement this on my existing project but i get this error:

How do i enable 'use php' directive in my existing project?

Does this really work or its a kind of a joke? Can i run cURL in here? Can i use this in my production app hosted on vercel?

[lukaulk]

Take another look at the use php documentation, see the file tries to change to .tsx or jsx