Talk by Rasmus Lerdorf at Etsy HQ. Covers engine improvements, breaking changes, a little about their process and internals too. The talk has a good pace and kept me interested.<p>Thanks to Etsy Engineering for hosting &amp; posting!<p>Official &quot;Migrating from PHP 5.6.x to PHP 7.0.x&quot; page: <a href="http:&#x2F;&#x2F;www.php.net&#x2F;migration70" rel="nofollow">http:&#x2F;&#x2F;www.php.net&#x2F;migration70</a>