I want to upgrade from php 5 to php 7. Currently running OpenEMR v5.0.0 (3) on linux Mint 17.3 (php 5) and want to upgrade to Mint 18 (php7). On a test machine running Mint 17.3 with OpenEMR I tried upgrading to Mint 18 using mintupgrade and the new install of Mint 18 stalls on startup.
Would a backed up copy of OpenEMR on a Mint 17.3 restore properly on the same version of OpenEMR on a Mint 18 machine? If not, what is the recommended way of updating OpenEMR from php5 to php7 on linux machines?