Ask HN: What do you think about PHP trends in 2017?

* What are your favorite changes that came in PHP in 2016? * What do you think about PHP 7 and 7.1? * PHP 5.6 active support is about to end this year. What problems do you think will occur while upgrading to PHP7 and 7.1 as it comes? * Do you think Frameworks like Laravel,Symfony, and Yii will help keep PHP a major programming language? * Which framework do you think will be the best: Symfony,Laravel or Yii?