$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

PHP 5.6 Installation on Ubuntu 20.04 – Step by step

June 7, 2020 | By the+gnu+linux+evangelist.

GNU/Linux Ubuntu 20.04 Installing PHP 5.6 – Step by step Guide

How to Install PHP 5.6 in Ubuntu 20.04 Focal LTS GNU/Linux.

And to get the PHP 5.6 Ubuntu Focal Installation, you have to Manually Setup the Ubuntu Apt PPA Repository.

Finally, this PHP 5.6 PPA includes also All the most Useful Extensions for PHP usage.

Step-by-step – PHP 5.6 Ubuntu 20.04 Installation Guide
  1. 1. Launching Terminal

    Open a Terminal window
    Ctrl+Alt+t on desktop
    (Press “Enter” to Execute Commands).

    How to Install PHP 5.6 on Ubuntu 20.04 Focal - Open Terminal Shell Emulator
    In case first see: Terminal QuickStart Guide.