Test PHP headers with PHPUnit

Question

I\'m trying to use PHPunit to test a class that outputs some custom headers.

The problem is that on my machine this:

Answer 1

As already mentioned in a comment, I think it's a better solution to define processIsolation in the XML config file like

     <?xml version="1.0" encoding="UTF-8"?>
     <phpunit
        processIsolation            = "true"
        // ... 
     >
     </phpunit>

Like this, you don't have to pass the --stderr option, which might irritate your co-workers.