WordPress: Action and Filter Hooks

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