Plugins are used as the primary components in building web applications. In normal circumstances, we have to use existing plugins as well as develop our own plugins. So it's important to improve the extendibility of plugins to adapt to the custom requirements of different applications. So, let's look at some of the important tips for developing extendable plugins:

• Add custom actions with do_action before and after executing major actions in your plugin, such as registration, login, data saving, and so on.
• Add custom filters with apply_filters when you have an output for displaying or variables and objects that are worth modifying.
• Use two parameters for filters and keep the second parameter as an array or object, allowing you to add custom attributes without breaking the functionality of existing implementations. It's not wise to add many parameters.
• Use one...