Hooks are the real power and the magic of WordPress.
The Action Hooks add new functionality (using add_action()), while Filter Hooks manipulate the post content (using add_filter()).
add_action( 'init', array( $this, 'my_callback' ) );
add_filter( 'the_content', array( $this, 'my_callback' ) );
The Filter hooks always return a value, unlike Action hooks which do not return a value.
Entrepreneur | Full-stack developer | Founder of MediSign Ltd. I have over 15 years of professional experience designing and developing web applications. I am also very experienced in managing (web) projects.
