Of note: that issue has been ongoing for months, and most of the issues that were found were fixed in PHP core within a few days&#x2F;weeks. Drupal 8&#x27;s test suite even caught one regression that delayed the PHP 7.0.0 final release a few weeks!<p>Most modern PHP apps will work on PHP 7.0.0 with little or no extra effort, but if you have a large legacy app, and haven&#x27;t ever turned on error logging, you may need to fix a bunch of deprecated code usage!