Actions and Filters in Themes — a practical guide to WordPress theme actions filters with clear examples you can reuse in real projects.
WordPress Theme Development Series (45/96). Prefer one article? Read the complete WordPress theme development tutorial.
Short description
Themes commonly hook `after_setup_theme`, `wp_enqueue_scripts`, and content filters.
Excerpt filter
add_filter('excerpt_length', fn () => 30);
add_filter('excerpt_more', fn () => '…');