WhatsApp API for WooCommerce: Automate Your Store Messaging

// functions.php — WooCommerce order confirmation
add_action('woocommerce_order_status_processing', function($order_id) {
    $order = wc_get_order($order_id);
    $phone = $order->get_billing_phone();
    
    if ($phone) {
        $response = wp_remote_post('https://api.chat-api.eu/v1/messages', [
            'headers' => [
                'Authorization' => 'Bearer YOUR_API_KEY',
                'Content-Type'  => 'application/json',
            ],
            'body' => json_encode([
                'to'       => $phone,
                'template' => 'order_confirmation',
                'params'   => [
                    'name'         => $order->get_billing_first_name(),
                    'order_number' => $order->get_order_number(),
                    'total'        => $order->get_formatted_order_total(),
                ],
            ]),
        ]);
    }
});