I use a few premium WordPress plugins regularly as part of my work. Rather than rely on keeping the licence key in the database (via the relevant plugin’s WordPress admin settings screen), I generally prefer to add the licence key as a constant to a (non git committed) wp-config.php file.
This way I don’t have to worry about if the licence key got lost when I pushed or pulled from a different development environment, when I use my preferred tool for doing this WP Migrate DB.
Right now there are four plugins that I use on a regular basis that support this method of defining a constant:
To use this method simply add the following to your wp-config.php file (you’ll need to do this on each environment – developer, staging or production – you plan to use this on) and you’re good to go. (If you use version control, I don’t recommend you commit you licence key however).
If you know of any other good premium plugins that support this method me know and I’ll add them here.