A practical, real-world guide to WordPress hooks (actions & filters) with examples used in production-level development.
Hooks are the core of WordPress development. If you master them, you can customize anything without touching core files.
Actions vs Filters
- Actions: Add functionality
- Filters: Modify data
Real Example 1: Change Add to Cart Text
add_filter('woocommerce_product_single_add_to_cart_text', function() {
return 'Buy Now';
});
Real Example 2: Add Content After Product Title
add_action('woocommerce_single_product_summary', function() {
echo '<p>Free Delivery Available</p>';
}, 6);
Real Example 3: Modify Price Output
add_filter('woocommerce_get_price_html', function($price) {
return $price . ' (Incl. Tax)';
});
Why This Matters
This is what separates:
- Beginner developers → plugin users
- Advanced developers → solution builders