创建functionality plugin 如果要完全阻止对管理面板的访问，请使用此选项：

/**
 * Hide the admin bar in the front end 
 */
add_filter(\'show_admin_bar\', \'__return_false\');

/**
 * Redirects Authors and Subscribers to the site front page using: get_home_url()
 */
add_action(\'admin_init\',\'block_users_wpse_53675\');

function block_users_wpse_53675()
{
    if( !current_user_can( \'delete_pages\' ) ) // blocks authors, contributors and subscribers
    {   
        wp_redirect( get_home_url(), 301 ); 
        exit;
    }
}

/**
 * Redirect Authors and Subscribers to the site front page
 * Except if viewing the Profile page
 */
add_action(\'admin_init\',\'block_users_wpse_53675\');

function block_users_wpse_53675()
{
    global $pagenow;
    if( \'profile.php\' == $pagenow ) 
        return;

    if( !current_user_can(\'delete_pages\') ) 
    {   
        wp_redirect( get_home_url(), 301 ); 
        exit;
    }
}

/**
 * Hide all menus from the Admin panel
 * Except the profile item
 */
add_action(\'admin_menu\', \'remove_admin_menus_wpse_53675\', 999);

function remove_admin_menus_wpse_53675() 
{
    if( !current_user_can(\'delete_pages\') ) 
    {
        remove_menu_page(\'index.php\');
        remove_menu_page(\'edit.php\');
        remove_menu_page(\'upload.php\');
        remove_menu_page(\'link-manager.php\');
        remove_menu_page(\'edit.php?post_type=page\');
        remove_menu_page(\'edit-comments.php\');
        remove_menu_page(\'tools.php\');
    }
}