WP has got hundreds of different plugins meant to perform different commands and/or boost performance. You can opt for writing your own plugins or make them available for public WP user download. Or get them beta tested if you want to find all the bugs.
Why Plugins Matter
Core is the number one essential WP element, themes come second and plugins come third. Plugins are built to enhance WP potential without engaging its core. The root itself gets erased and rewritten for every new WP version while plugins remain compatible.
To start coding a plugin you need 4 basic elements. You need a plugin header comment, add PHP, functionsand hooks. Make your plugin as complex as you want but remember the essentials.
Eventually you might feel ready to move to the premium plugin segment charging a subscription fee. But this takes a lot of work and experience so do not rush and work up your skills.
Your plugin has a potential to be used by millions of WP websites thus you need to take the security seriously. Start with user capabilities hierarchy, the top user inherits all the rights of the below users and the administrator is on top of the users for every unique website. Once you have all the user roles figured
out follow the guideline:
- The output data should clean. Make sure to secure the output as well as you can. Use wp_kses command and make certain that the only data making output is specified HTML. Keep in mind, typical scenarios have already been foreseen covered by WP functions.
- Secure the input. Here you need to use WP tools together with data validation outcome. The WP CMS has a vast array of services to sanitize the unsafe data your plugin accepts.
- All user inputs and APIs are validated and substantiated. Use WP core functions, hypertext preprocessor functions or write functions by yourself.
- Every user should have clear capabilities. Each user in the hierarchy has to have different ones.
That is where you better ask for a translator. Basically internationalization aka i18n means developing a plugin ready to be translated. Your code should foresee the further translation option. WordPress is universal and international thus it should be user friendly all over the globe. Of course internationalization
is a grueling task especially for a rookie, but in the open community you will always have individuals willing to help you.