Memory of 42

1，常用主題函數

//移除后台默认小控件
add_action('wp_before_admin_bar_render', 'my_admin_bar_remove', 0);

function my_admin_bar_remove()
{
    global $wp_admin_bar;
    global $wp_meta_boxes;
    
    /* Remove their stuff */
    $wp_admin_bar->remove_menu('wp-logo');
    // 以下这一行代码将删除 "快速发布" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']);
    // 以下这一行代码将删除 "引入链接" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
    // 以下这一行代码将删除 "插件" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
    // 以下这一行代码将删除 "近期评论" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
    // 以下这一行代码将删除 "近期草稿" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_recent_drafts']);
    // 以下这一行代码将删除 "WordPress 开发日志" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
    // 以下这一行代码将删除 "其它 WordPress 新闻" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
    // 以下这一行代码将删除 "概况" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
    // 以下这一行代码将删除 "活动" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_activity']);
}


// 添加后台小控件
add_action('wp_dashboard_setup', 'my_add_dashboard_widgets');

function my_add_dashboard_widgets()
{
    wp_add_dashboard_widget('my_dashboard_widget', // Widget slug.
'welcome', // Title.
'dashboard_widget_function') // Display function.
;
}

//Create the function to output the contents of our Dashboard Widget.
function dashboard_widget_function()
{
    echo "欢迎！<br/>请点击左侧菜单进行相应操作。";
}

// 去除后台标题中的“—— WordPress”
add_filter('admin_title', 'wpdx_custom_admin_title', 10, 2);

function wpdx_custom_admin_title($admin_title, $title)
{
    return $title . ' &lsaquo; ' . get_bloginfo('name');
}


// 去除后台的谷歌自体
add_action('init', 'remove_open_sans_from_wp_core');

function remove_open_sans_from_wp_core()
{
    wp_deregister_style('open-sans');
    wp_register_style('open-sans', false);
    wp_enqueue_style('open-sans', '');
}

// 自定义WordPress后台底部信息
add_filter('admin_footer_text', 'left_admin_footer_text');

function left_admin_footer_text($text)
{
    // 修改左侧信息
    $text = '感谢使用OKMILK销量查询系统';
    return $text;
}
add_filter('update_footer', 'right_admin_footer_text', 11);

function right_admin_footer_text($text)
{
    // 修改右侧信息
    $text = "4.6.1版本";
    return $text;
}

// 去除右上角帮助
add_filter('contextual_help', 'wpse50723_remove_help', 999, 3);

function wpse50723_remove_help($old_help, $screen_id, $screen)
{
    $screen->remove_help_tabs();
    return $old_help;
}

// 去除一般用户升级提醒
if (! current_user_can('manage_options'))
{
    // Disable Theme Updates
    remove_action('load-update-core.php', 'wp_update_themes');
    add_filter('pre_site_transient_update_themes', create_function('$a', "return null;"));
    wp_clear_scheduled_hook('wp_update_themes');
    
    // Disable Plugin Updates
    remove_action('load-update-core.php', 'wp_update_plugins');
    add_filter('pre_site_transient_update_plugins', create_function('$a', "return null;"));
    wp_clear_scheduled_hook('wp_update_plugins');
    
    // Diasable Core Updates
    add_filter('pre_site_transient_update_core', create_function('$a', "return null;"));
    wp_clear_scheduled_hook('wp_version_check' );
}

2，插件

查看當前模板文件：安裝插件Show Current Template。

修改登陸頁logo：安裝插件Custom Login Logo。

去除wp頭部版本號：安裝插件Remove WP version and shortlink。

维护模式：安裝插件Maintenance Mode。