Advanced WordPress: Action and Filter Hooks (2017)

Take the next step in WordPress development. Learn how to work with action and filter hooks and use them to customize the behavior of WordPress core, themes, and plugins.

Introduction

• Using hooks and filters with confidence
• What you should know

1. Understand Hooks and Filters

• What is WordPress?
• The WordPress plugin API
• Action hooks explained
• Filters explained
• Changing execution order with priorities
• Using arguments to pass data
• Conditionals and context

2. Work with WordPress Hooks and Filters

• Finding references and documentation
• Identifying available hooks and filters
• A look at load order and dependencies
• Understanding callback functions
• Using apply_filters
• Registering and executing hooks in JavaScript

3. Create a Basic Plugin Using Hooks and Filters

• A look at what you're building
• Scaffold a simple plugin
• Adding a custom style sheet
• Registering a sidebar
• Displaying a widget area on single posts
• Applying filters for loading style sheets

4. Work with Non-WordPress Hooks

• Adding custom hooks
• Inside themes and plugins with built-in hooks
• Tips for using third-party hooks

Conclusion

• Staying current with WordPress
• Next steps