KDE Neon 2019 Install PHP 5.6 – Step by step Guide
How to Install PHP 5.6 on KDE Neon 2019 LTS GNU/Linux – Step by step Tutorial.
And to get the PHP 5.6 KDE Neon 2019 Installation, you have to Manually Setup the KDE Neon Apt PPA Repository.
Finally, this PHP 5.6 PPA includes also All the most Useful Extensions for PHP usage.

-
1. Launching Terminal
Open a Terminal window
(Press “Enter” to Execute Commands)Dirtectly start Typing “konsole” on desktop.
Contents