如何客製WordPress後台的「說明」(Contextual Help)頁面與「顯示選項」(Screen Options)頁面？
原始程式 這裡

<?php

/*
Plugin Name: PowenKo, hello , I am here
Plugin URI: httpss://wordpress.org/plugins/hello-dolly/
Description: This is not just a plugin, it symbolizes the hope and enthusiasm of an entire generation summed up in two words sung most famously by Louis Armstrong: Hello, Dolly. When activated you will randomly see a lyric from <cite>Hello, Dolly</cite> in the upper right of your admin screen on every page.
Author: Powen Ko
Version: 1.6
Author URI: httpss://ma.tt/
*/

 

add_filter('contextual_help', 'custom_help2', 1, 3);
function custom_help2($contextual_help, $screen_id, $screen)  
{
    global $my_plugin_hook;
    // 判斷若目前畫面的screen_id是我們的plugin hook id，就顯示對應的說明內容
    if ($screen_id == $my_plugin_hook)
    {
        $contextual_help = '您好，歡迎使用My Plugin!';
    } 
    else
    {
        $contextual_help .= '<h3>您好，目前頁面的screen_id為：'.$screen_id.'</h3>';
    }
    return $contextual_help;
}


add_filter('screen_settings', 'screen_options_demo2', 1, 2);
function screen_options_demo2($current, $screen)
{
    $current .= '<b>此頁的screen id為：'.$screen->id.'</b>';
 
    return $current;
}


?>