EDIT - Only use if your hosting does not support PHP 8.1 or higher. If your host supports PHP 8.1 or higher, use phpVMS v7. Present users of phpVMS v2/v5 should use the legacy import feature of phpVMS v7. New VAs should install phpVMS v7.
After much time and effort fixing errors, I now have phpVMS 5.5.2 working successfully on PHP 7.2. My live site has been running this for over 3 months. The installation program has now been updated to be able to install under PHP 7.2 as well.
After much testing, including by several members here, I decided to release this version to the community. Here's a link to the program at github: https://github.com/ProAviaAZ/phpvms_5.5.2.72
Be sure to read the README file. Some may experience a few warnings when installing. While these warnings can be fixed, doing so creates major issues elsewhere with the installation. Continuing with the installation will install the program successfully. Additionally, this version may install under PHP 7.0 and PHP7.1 - but has not been extensively tested. It will NOT install under PHP 7.3 or higher.
Some existing addon modules may need additional tweaking to get them working correctly with phpVMS version 5.5.2.72 - this is due to changes in PHP 7.2
Thanks to those members who helped test this for me. And thanks to Nabeel for permission to make this version available to the community.