每当实例化$wc_lg = new WC_List_Grid()时，它都会触发 wp 挂钩.设置全局WP类对象后，实例$wg_lg将立即对其进行调用.它会触发woocommerce_before_shop_loop钩子.每当发生这种情况时，$wg_lg都会再次对其自身调用一个函数.即gridlist_toggle_button().

Whenever $wc_lg = new WC_List_Grid() is instantiated, its going to trigger wp hook. Right after global WP class object is set up, the instance $wg_lg is going to call setup_gridlist() on itself. Its going to trigger woocommerce_before_shop_loop hook. And whenever that happens, again $wg_lg is going to call a function on itself. Namely gridlist_toggle_button().

我想更改gridlist_toggle_button函数的内容

I want to change the content of the gridlist_toggle_button function

为什么不只是在插件内部进行更改?喜欢覆盖其中的所有内容.

Why not just to change it inside plugin ? Like override everything whats inside it.

全局$ WC_List_Grid;

global $WC_List_Grid;

您怎么知道$WC_List_Grid有它的名字?它只是一个类名.可以用$foo或$bar之类的任何名称实例化.

How do you know that $WC_List_Grid has its name? Its just a class name. It can be instantiated under any name like $foo or $bar.

我假设您在模板的functions.php文件中进行编码.在functions.php和remove_action()只能在add_action()发生后才能工作.

I assume that you are coding in functions.php file of your template. Plugins are being loaded before functions.php and remove_action() can only work after add_action() happend.

重要提示:要删除一个钩子，请使用$ function_to_remove和$ priority 添加钩子时，参数必须匹配.两者都适用 过滤器和操作.删除失败不会发出警告.

Important: To remove a hook, the $function_to_remove and $priority arguments must match when the hook was added. This goes for both filters and actions. No warning will be given on removal failure.

http://codex.wordpress.org/Function_Reference/remove_action

因此，这实际上仅应用于删除操作，但是这如何帮助您更改函数内部的内容? :

So this should actually work just for removing the action, but how that helps you to change content inside of the function? :

remove_action(
    'woocommerce_before_shop_loop',
    array('WC_List_Grid', 'gridlist_toggle_button'),
    30
);

请注意，您使用的优先级为100

编辑

我发现do_action('woocommerce_archive_description')发生在 archive- product.php 和 wc模板中-functions.php 恰好在插件中执行woocommerce_before_shop_loop挂钩操作之前.尝试使用此:

I found out that do_action('woocommerce_archive_description') happens in archive-product.php and in wc-template-functions.php right before woocommerce_before_shop_loop hook actions are being executed in plugin. Try to use this:

function remove_plugin_actions(){
   global $WC_List_Grid;
   remove_action( 'woocommerce_before_shop_loop', array( $WC_List_Grid, 'gridlist_toggle_button' ), 30); 
}
add_action('woocommerce_archive_description','remove_plugin_actions');