Yes, but more or less everything you know about PHP 5 is still true and will work just fine in PHP 7.

https://wiki.php.net/rfc/php6#historical_context

http://php.net/manual/en/migration70.incompatible.php

Try `print false;` and see if you get the result you expect[0]. Because it differs compared to node, perl, python(Yes Yes first char uppercase) and other languages I can not think of.

Also good luck with the param ordering of `array_map` compared to `array_filter` and `array_reduce`. Actually get use to the word array. Because in 2009 the PHP developers did not think array is a important data type that needs a short hand array() vs [], and all their function names `array_` shows this ugliness.

I would advice rather spend your time learning python or javascript. But I acknowledge PHP became a de facto standard with MediaWiki, WordPress, Facebook, dragging the broken language into the 21st century.

[0]: http://pastebin.com/raw/P6BTmceL