PHPUnit can, for example, interact with issues in
Trac
( https://github.com/sebastianbergmann/phpunit-ticketlistener-trac )GitHub
( https://github.com/sebastianbergmann/phpunit-ticketlistener-github )- and a couple others: http://pear.phpunit.de/
Buiding one that fits your propose sure is possible.
Also there are other ways to make PHPUnit tell you what is happening like
Test listeners
. Where you can really act on everything PHPUnit does.The xml or json output
. That you can parse and act on it accordingly