Did want to point out something with your implementation, though. The only way you’ll get a valid response is by physically calling the __construct() method on an instantiated class, which may look a little weird. If you just use new FuzzyDate($variable) you will not get the expected value – the constructor (when called as a constructor) always returns void().

If you wanted to get tricky, replace the __construct with __invoke. Then you could do

$fuzzy = new Fuzzydate();
echo $fuzzy($timesince);