我有一个插件，它添加了以下操作，其中包括在添加新用户时发送注册邮件：

add_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);

我想删除此操作，以便通过在调用的函数中进行一些额外检查来再次添加它。我尝试了以下方法，但未能成功：

add_action( \'um_post_registration_approved_hook\', \'remove_my_action\', 11 );
function remove_my_action(){
    remove_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);
}

有什么想法吗？

EDIT

原来我的优先级错了，谢谢！我现在可以删除该操作并注册一个新操作。然而，我现在对此有一些问题。这是我取消注册的内容：

add_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);

    function um_post_registration_approved_hook($user_id, $args){

        global $ultimatemember;

        $ultimatemember->user->approve();

    }

然后，我注册了以下内容：

add_action( \'um_post_registration_approved_hook\', \'remove_my_action\', 9 );
function remove_my_action(){
    remove_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);
    add_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook_new\', 10, 2);

}


function um_post_registration_approved_hook_new($user_id, $args){
    newApprove();
}

// Make the action call another version of this function - check for user meta - paupress_pp_user_type

function newApprove(){

    global $ultimatemember;


    $user_id = um_user(\'ID\');

    delete_option( "um_cache_userdata_{$user_id}" );

    if ( um_user(\'account_status\') == \'awaiting_admin_review\' ) {

        $this->password_reset_hash();

        $ultimatemember->mail->send( um_user(\'user_email\'), \'approved_email\' );


    } else {

        // check for paupress_pp_user_type before sending

        $this->password_reset_hash();
        // DONT SEND THIS MAIL
        //$ultimatemember->mail->send( um_user(\'user_email\'), \'welcome_email\');

    }



    $this->set_status(\'approved\');

    $this->delete_meta(\'account_secret_hash\');

    $this->delete_meta(\'_um_cool_but_hard_to_guess_plain_pw\');

    do_action(\'um_after_user_is_approved\', um_user(\'ID\') );

}

它只是原始approve（）函数的另一个版本，删除了邮件通知。但这不起作用，因为最初的approve（）是在UM\\u用户类中定义的，函数依赖于此。原始文件位于此处，第941行定义了approve（）函数：http://pastebin.com/FknrcxzM

我的问题有意义吗？我可以钩住类而不是函数吗？-我真的不知道这里的正确方法。。

remove_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);

add_action( \'um_post_registration_approved_hook\', \'remove_my_action\', 9 );
function remove_my_action(){
    remove_action(\'um_post_registration_approved_hook\', \'um_post_registration_approved_hook\', 10, 2);
}

if(!function_exists(\'remove_my_action\')){
    function remove_my_action(){
        remove_action( \'storefront_header\', \'storefront_secondary_navigation\', 30 );
        remove_action( \'storefront_header\', \'storefront_header_container_close\', 41 );
        remove_action( \'storefront_header\', \'storefront_primary_navigation_wrapper\', 42 );
        remove_action( \'storefront_header\', \'storefront_primary_navigation\', 50 );
        remove_action( \'storefront_header\', \'storefront_primary_navigation_wrapper_close\', 68 );
    }
}
add_action( \'init\', \'remove_my_action\', 99);