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

How to Install PHP 5.6 on Mint Gnu/Linux Distro

Install PHP 5.6 on Mint GNU/Linux desktops – Step by step Tutorials.

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

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

How to Install PHP 5.6 on Linux Mint - Featured

Linux Mint PHP 5.6 Install