sebastianbergmann/phpunit — comment on commit 03d70027893637b91f4e73cd9a1705ad586fb66f
File: PHPUnit/Util/Class.php line 158
By dharkness:

As long as PHP_VERSION doesn't get reported as "5.4" it's ok, however:

php -r "var_dump(version_compare('5.4.0', '5.4.0', '>'));"
bool(false)

:(