The Customizer Export/Import plugin allows you to export or import your WordPress customizer settings from directly within the customizer interface! If your theme makes use of the WordPress customizer for its settings, this plugin is for you!
WP Migrate DB exports your database as a MySQL data dump (much like phpMyAdmin), does a find and replace on URLs and file paths, handles serialized data, then allows you to save it to your computer as an SQL file.
Clean up your WordPress website’s HTTPS insecure content and mixed content warnings. Installing the SSL Insecure Content Fixer plugin will solve most insecure content warnings with little or no effort. The remainder can be diagnosed with a few simple tools.
Object-oriented code, among other things, can help organize and add reusability to your code. In this tutorial, I will teach you the basics of writing a WordPress plugin using object oriented techniques.