It is on my "to do" list to update the instructions on the Debian and Ubuntu installations on the PM wiki, but I haven't had the time.
How did you install PHP 5.6? Here is how I did it:
https://stackoverflow.com/questions/463 ... n-debian-9
First, uninstall mariadb:
apt-get purge mariadb*
First get the lastest version of the MySQL packages repo found here:
If you want to avoid registering with Oracle, you can download and install the MySQL repo in the terminal like this:
wget https://dev.mysql.com/get/mysql-apt-con ... -1_all.deb
dpkg -i mysql-apt-config_0.8.10-1_all.deb
When the package is installing, you will see a dialog box in the terminal that asks which version of MySQL. You should select "mysql-5.6" in the first screen and "MySQL Server & Cluster" in the second screen.
Then, update the repo list:
Then, verify that the version of MySQL to be installed is 5.6:
apt-cache show mysql-server
Then, install MySQL 5.6:
apt-get install mysql-server php5.6-mysql
Note: Your "php5.6-mysql" package might have a different name, if you didn't use deb.sury.org to install PHP 5.6.
Amos B. Batto ♦ ProcessMaker Technical Documentation Writer & Forum Manager ♦ Cofounder of ILLA (http://www.illa-a.org)