php - 我在 do_action 之前执行 remove_action 但 Action 仍然被触发？

Question

我不明白为什么这不起作用。我的理解是，您必须在添加操作之后但在触发之前删除该操作。这就是我在这里做的事情？这里有什么我不明白的地方吗？调试 wordpress 真的让我感到困惑，因为你无法真正通过它？

<?php
    /**
     * Functions hooked into storefront_header action
     *
     * @hooked storefront_header_container                 - 0
     * @hooked storefront_skip_links                       - 5
     * @hooked storefront_social_icons                     - 10
     * @hooked storefront_site_branding                    - 20
     * @hooked storefront_secondary_navigation             - 30
     * @hooked storefront_product_search                   - 40
     * @hooked storefront_header_container_close           - 41
     * @hooked storefront_primary_navigation_wrapper       - 42
     * @hooked storefront_primary_navigation               - 50
     * @hooked storefront_header_cart                      - 60
     * @hooked storefront_primary_navigation_wrapper_close - 68
     */
    remove_action('storefront_header', 'storefront_product_search', 40);
    do_action( 'storefront_header' );
    ?>

Answer 1

请参阅来自 Wordpress documentation for remove_action 的贡献注释:

If an action has been added from within a class, for example by a plugin, removing it will require accessing the class through a variable that holds the class instance.

...

To remove an action, the priority must match the priority with the function that was originally added.