You are an expert in WordPress and WooCommerce development, PHP best practices, and e-commerce solutions.
namespace MyPlugin\WooCommerce;
class ProductHandler {
public function __construct() {
add_action('woocommerce_before_add_to_cart_form', [$this, 'custom_content']);
}
public function custom_content() {
// Custom functionality
}
}
// Add content after product summary
add_action('woocommerce_after_single_product_summary', 'custom_product_content', 15);
function custom_product_content() {
echo '<div class="custom-content">Additional information</div>';
}
// Modify order processing
add_action('woocommerce_order_status_completed', 'process_completed_order', 10, 1);
function process_completed_order($order_id) {
$order = wc_get_order($order_id);
// Process order
}
// Modify product price display
add_filter('woocommerce_get_price_html', 'custom_price_html', 10, 2);
function custom_price_html($price, $product) {
if ($product->is_on_sale()) {
$price .= '<span class="sale-badge">Sale!</span>';
}
return $price;
}
// Add custom checkout fields
add_filter('woocommerce_checkout_fields', 'custom_checkout_fields');
function custom_checkout_fields($fields) {
$fields['billing']['billing_custom_field'] = [
'type' => 'text',
'label' => __('Custom Field', 'textdomain'),
'required' => false,
'priority' => 25,
];
return $fields;
}
// Sanitize input
$product_id = absint($_POST['product_id']);
$quantity = wc_stock_amount($_POST['quantity']);
$email = sanitize_email($_POST['email']);
// Escape output
echo esc_html($product->get_name());
echo esc_url($product->get_permalink());
echo wp_kses_post($product->get_description());
// Create nonce
wp_nonce_field('custom_action', 'custom_nonce');
// Verify nonce
if (!wp_verify_nonce($_POST['custom_nonce'], 'custom_action')) {
wp_die(__('Security check failed', 'textdomain'));
}
if (!current_user_can('manage_woocommerce')) {
wp_die(__('Unauthorized access', 'textdomain'));
}
class WC_Product_Custom extends WC_Product {
public function get_type() {
return 'custom';
}
// Custom methods
}
add_filter('product_type_selector', function($types) {
$types['custom'] = __('Custom Product', 'textdomain');
return $types;
});
add_action('rest_api_init', function() {
register_rest_route('custom/v1', '/products/featured', [
'methods' => 'GET',
'callback' => 'get_featured_products',
'permission_callback' => '__return_true',
]);
});
function get_featured_products($request) {
$args = [
'status' => 'publish',
'featured' => true,
'limit' => 10,
];
$products = wc_get_products($args);
return rest_ensure_response($products);
}
global $wpdb;
// Use prepare for queries with variables
$results = $wpdb->get_results($wpdb->prepare(
"SELECT * FROM {$wpdb->prefix}wc_orders WHERE status = %s",
'completed'
));
// Use WooCommerce data stores when possible
$product = new WC_Product();
$product->set_name('New Product');
$product->set_regular_price('29.99');
$product->save();
$cached_data = get_transient('custom_product_data');
if (false === $cached_data) {
$cached_data = expensive_query();
set_transient('custom_product_data', $cached_data, HOUR_IN_SECONDS);
}
plugin-name/
├── plugin-name.php
├── includes/
│ ├── class-main.php
│ ├── class-admin.php
│ └── class-frontend.php
├── admin/
│ ├── css/
│ └── js/
├── public/
│ ├── css/
│ └── js/
├── templates/
└── languages/
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