Yes, but only with changes in source code. Look her. The next days I will update the topic. For php > 7.1 some changes are still necessary. These changes are not made to run a live forum. It is rather thought to convert his forum to PHPBB 3.3. PHP 5.6 is hardly available at the hosters. Because with php 7 it is hardly possible to convert a phpBB 3.0.14 to phpBB 3.3.
What keeps you from installing PHP5 on your computer? Then you can upgrade your board to i.e. phpBB3.1 or 3.2, then install PHP7, then upgrade further. No hoster required.
yeah, and I also want to be able to use my personal webserver with DOS.
Hey, I don't know Lynx browser. I that the latest state of the art?
What do you do then to get the 3.3 installation that it would be upgraded to running since it's got a PHP 7.1.3+ requirement?
that would depend on your hosting. my hosting offers PHP5.3 to PHP7.4 with a simple .htaccess line.