Copy the extension to phpBB/ext/paul999/mention
Go to "ACP" > "Customise" > "Extensions" and enable the "phpBB mentions" extension.
Please note that this extension requires phpBB 3.3 and at least php 7.1! The extension has only been tested with PHP7.1, 7.2, 7.3 7,4 and 8.0. If you use phpBB 3.2, you should use 1.0.x instead.
We use Travis-CI as a continuous integration server and phpunit for our unit testing. See more information on the phpBB development wiki. To run the tests locally, you need to install phpBB from its Git repository. Afterwards run the following command from the phpBB Git repository's root:
Windows:
phpBB\vendor\bin\phpunit.bat -c phpBB\ext\paul999\mention\phpunit.xml.dist
others:
phpBB/vendor/bin/phpunit -c phpBB/ext/paul999/mention/phpunit.xml.dist