Quite frequently I need to check what is actual version of Apache and PHP on host where WordPress is running. For some reason, WordPress displays just it’s own version and you have to use other means like logging to hosting control panel, or uploading some independent script.
As I need this on several WordPress sites I decided to create plugin for that: https://wordpress.org/plugins/show-apache-and-php-version/.
Plugin is very simple, it just hooks up to version displaying for WordPress and adds additional version information. It is displayed in Dashboard at lower right corner of each page. That is all.