Jordi Boggiano, co-creator of Composer / Packages, published some new stats on the usage of PHP versions. Great to see that PHP 7 overall now represents over 50%.
A quick note on methodology, because all these stats are imperfect as they just sample some subset of the PHP user base. I look in the packagist.org logs of the last month for Composer installs done by someone. Composer sends the PHP version it is running with in its User-Agent header, so I can use that to see which PHP versions people are using Composer with.