读取源代码。来自woocommerce ajax。php（在插件的根文件夹中）

Javascript/Ajax add to cart

/**
 * AJAX add to cart
 *
 * @access public
 * @return void
 */
function woocommerce_ajax_add_to_cart() {

    global $woocommerce;

    check_ajax_referer( \'add-to-cart\', \'security\' );

    $product_id = (int) apply_filters(\'woocommerce_add_to_cart_product_id\', $_POST[\'product_id\']);

    $passed_validation = apply_filters(\'woocommerce_add_to_cart_validation\', true, $product_id, 1);

    if ($passed_validation && $woocommerce->cart->add_to_cart($product_id, 1)) :
        // Return html fragments
        $data = apply_filters(\'add_to_cart_fragments\', array());
        do_action( \'woocommerce_ajax_added_to_cart\', $product_id);
    else :
        // If there was an error adding to the cart, redirect to the product page to show any errors
        $data = array(
            \'error\' => true,
            \'product_url\' => get_permalink( $product_id )
        );
        $woocommerce->set_messages();
    endif;

    echo json_encode( $data );

    die();
}

add_action(\'wp_ajax_woocommerce_add_to_cart\', \'woocommerce_ajax_add_to_cart\');
add_action(\'wp_ajax_nopriv_woocommerce_add_to_cart\', \'woocommerce_ajax_add_to_cart\');

Non-AJAX: Requires Page Load

如果您没有使用AJAX，那么您使用的是woocommerce_add_to_cart_action() 来自woocommerce功能。在init 钩它有点长，所以我将让您从提到的文件中读取它。基本上，它会查找add-to-cart的查询参数（应该等于产品ID）并从那里开始。