This simple guide is intended for Debian GNU/Linux and derivates (Ubuntu, Mint). You need to be root (sudo) for most of the listed commands.
$ apt install apache2 curl php php-bcmath php-cli php-curl php-gd php-imagick php-imap php-intl php-mbstring php-mysql php-sqlite3 php-xml php-zip composer
Config files for PHP are then located in /etc/php/8.x/.
$ apt install mariadb-server mycli
$ apt install phpmyadmin
During that installation an interactive dialogue opens where you have to select apache2, then dbconfig-common settings launches automatically where you will create the main database and password.
The settings get saved to these locations:
/etc/dbconfig-common/phpmyadmin.conf and /etc/phpmyadmin/config-db.php
Then open your web browser and you should have access to:
http://localhost/phpmyadmin/, enter “phpmyadmin” as username and you previously chosen password.
Start MariaDB:
$ systemctl start mariadb
Make MariaDB start automatically during system boot:
$ systemctl enable mariadb
Show Apache status:
$ systemctl status apache2
Restart Apache:
$ systemctl restart apache2 (older way: service apache2 restart)
Add and remove PHP modules, here with xdebug module as an example:
$ phpenmod xdebug
$ phpdismod xdebug
After each PHP module change it's necessary to reload the Apache server:
$ systemctl reload apache2 (it's not necessary to restart it completely)
Footnote:
Another (but older) how-to article can be found here.