首先，请注意您的代码：如果您没有用花括号封装条件的代码：if($something){ encapsulated_actions(); }
它将只执行下一行。

因此，您应该使用：

if( \'post\' != get_post_type() ) // if different of desired type, do nothing and return default
    return $actions; 

// do your thing and return modified var
unset ($actions[\'spam\'], $actions[\'trash\'] ); 
return $actions;

或：

if( \'post\' == get_post_type())
{
    unset ($actions[\'spam\']); 
    unset ($actions[\'trash\']); 
    /* The following is best use */
    // unset ($actions[\'spam\'], $actions[\'trash\'] ); 
}
// returns modified or unmodified var depending on previous check
return $actions;

我们需要针对四个地方来阻止/隐藏对评论的诽谤。在这里，我正在检查管理角色。要检查特定用户，请使用get_current_user_id().

函数名表示WordPress答案中原始问题的ID，例如。，wpse_92313 是：Comments screen in backend, how to disable Quick Edit | Edit | History | Spam | for non admins

1） 快速编辑操作行

add_filter( \'comment_row_actions\', \'comments_row_wpse_92313\', 15, 2 );   
function comments_row_wpse_92313( $actions, $comment )
{
    /* Type of the parent post */
    // $parent_type = get_post_type( $comment->comment_post_ID ) );

    if( !current_user_can( \'delete_plugins\' ) )
        unset($actions[\'trash\'] );

    return $actions;
}

视图行（All | Pending | ... | Trash )

add_filter( \'views_edit-comments\', \'wpse_30331_custom_view_count\', 10, 1);   
function wpse_30331_custom_view_count( $views ) 
{
    if( !current_user_can( \'delete_plugins\' ) )
        unset( $views[\'trash\'] );

    return $views;
}

批量操作我刚刚发现了过滤器挂钩\'bulk_actions-\' . $this->screen->id

add_filter( \'bulk_actions-edit-comments\', \'remove_bulk_trash_wpse_92534\' );   
function remove_bulk_trash_wpse_92534( $actions )
{
    if( !current_user_can( \'delete_plugins\' ) )
        unset( $actions[\'trash\'] );

    return $actions;
}

阻止直接访问垃圾屏幕重定向example.com/wp-admin/edit-comments.php?comment_status=trash 至主评论屏幕。

add_action( \'admin_head-edit-comments.php\', \'wpse_74488_block_trash_access\' );   
function wpse_74488_block_trash_access()
{
    // Don\'t run the function for Admins
    if( current_user_can( \'delete_plugins\' ) )
        return;

    if( isset( $_GET[\'comment_status\'] )  && \'trash\' == $_GET[\'comment_status\'] ) 
    {
        wp_redirect( admin_url( \'edit-comments.php\' ) ); 
        exit;
    }
}