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add_action('woocommerce_before_single_product', 'add_affiliate_links_to_product_image_and_button', 10);function add_affiliate_links_to_product_image_and_button() {
global $product;// Check if the product has an affiliate URL
$affiliate_url = get_post_meta($product->get_id(), '_affiliate_url', true);
if ($affiliate_url) {
// Modify product image link
remove_action('woocommerce_before_single_product', 'woocommerce_show_product_images', 20);
add_action('woocommerce_before_single_product', function() use ($affiliate_url) {
echo '';
woocommerce_show_product_images(); // Product images
echo '';
}, 20);// Modify Buy button (which is actually "Add to Cart" button in WooCommerce)
remove_action('woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30);
add_action('woocommerce_single_product_summary', function() use ($affiliate_url) {
echo 'Buy Now';
}, 30);
}
} 
