One of the websites I built that is using Couch is running on a server with PHP 5.6 but the server is upgrading to PHP 7.1 soon. Will this cause any problems with Couch? I am using the latest version. Thanks.
As far as I know, there has been no report of Couch having trouble running on PHP 7.x. Having a backup is always prudent before doing any kind of upgrades, though. Get that and you can safely move to 7.x.