PHP Configuration
From Webmin Documentation
The PHP Configuration module allows for access to the PHP settings of the computer administered by webmin.
If PHP was not installed/available yet you can install PHP using Software Packages. Since PHP is primarily a web-language Apache Webserver and tools will be installed as well.
To view the actual PHP version you need a workaround by running php -v in Running Processes.
To get a detailed view of the actual PHP capabilities use:
php -r 'echo phpinfo();'