Suffixed installed PHP 7.2 for arch linux
git clone https://github.com/Caffe1neAdd1ct/php72-noconflict.git cd php72-noconflict makepkg -sri
There are suffixed installs for php56, php70 and php71. Arch linux recently moved up to php73 for the core stable package and no php72 package is available yet.
Use this at your own risk, no warranty or fitness for purpose to be found here.
Use AUR https://aur.archlinux.org/packages/php72/
Has been updated with no-conflict style install away from mainline php