On the 01/01/2019 support ended for all versions of PHP 5 over the past 2 years PHP 5.5 and 5.6 have only been supported for critical security issues and releases are only made on an as-needed basis.
PHP versions 5.5, 5.6 and 7.0 have now reached their end of life and no longer supported, anyone using any of these releases is advised to upgrade as soon as possible because they may be exposed to unpatched security vulnerabilities.
So over the past week I have upgraded the PHP version in all the hosting packages to PHP version 7.2 in order to keep all of my clients web sites, hosting packages and the cloud server they are hosted on secure.
The process for none dynamic web sites was straight forwards and only involved changing the PHP version within the clients hosting package from version PHP 5 to PHP 7.2 and uploading a single file into folder public_html which contains all of the files for the web site to allow me to check the PHP version to confirm the change was successful.
With all the WordPress sites the process involved making sure that the WordPress core software, plugins and theme were all up to date, if upgrades were available these were installed to ensure everything was up to date, this also applied to Cube Cart stores.
Most developers will have made adjustments to account for changes in the versions of PHP and they will be working with the latest supported versions, hence making sure that the dynamic sites are properly upgraded and running the most up to date code.
I then changed the PHP version within the clients hosting package and I then uploaded a simple PHP file to the public_html folder for each site which provides detailed information about the version of PHP running on the hosting package that allows me to confirm the version change is successful, then I delete the file.
You find information about currently supported PHP versions at www.phpp.net using the link below.