Craft Server Check
This script checks if a server meets the minimum requirements to run a Craft 3 installation.
You can upload the server folder to your web server's public html folder and load checkit.php from your browser
or upload server anywhere on your server and execute php checkit.php from the console to see the results.
If you supply credentials in config/db.php to your database, then the script will perform some additional database checks as well.