PHPUnit via phar with suhosin

The PHPUnit developer has announced the end of life for the PEAR installation method for PHPUnit. So I tried the phar method, but phpunit (and phar) would fail silently. After a little searching, I found a useful post* suggesting that suhosin might be the problem (I only have PHPUnit on my development platform, but I also have suhosin there, so that it more-or-less matches production). That post's suggestion of adding suhosin.executor.include.whitelist=phar to php.ini did the trick.

*That post is for an entirely different package, but it was the same problem I was having.