Environment to do updates to legacy (4.7) version of WP while staying on php 5.6?

nizz0k,

so not sure exactly what you are looking for but I will give it a try. If you have not updated your WP core or any of the plugins running on this PHP5.6 server then most likely you will have some issue/issues trying to run this same code without any updates on a PHP 7.0 server.

What this issue will be of course is hard to tell as I have no idea what plugins you are running. Here ares some issues I have experience over the past years jumping from PHP 5.6 to PHP 7.0 to PHP 7.2

I have not had my WP site crash but I have many PHP warnings go off. I have also had some things not function properly and some plugins functionality breaking, custom theme templates not working right etc..

The only way for you to know this and figure out everything is to spin up a PHP 7.0 server, if that is your version of choice and place a copy of your site and start updating one item at a time. Turn on debug and start fixing any issues. Then you can get your WP site updated and running on PHP 7. This custom PHP application will also need to be eventually done the same as the site.

This is the only way I see moving your current stuff over.

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