如何开发一个自动生成关键词云的WordPress插件

<?php /**  * Plugin Name: Keyword Cloud Generator  * Plugin URI: https://yourwebsite.com/  * Description: Generate keyword cloud for your blog posts.  * Version: 1.0.0  * Author: Your Name  * Author URI: https://yourwebsite.com/  * License: GPL2  */  // When the plugin is activated register_activation_hook(__FILE__, 'keyword_cloud_activation');  // When the plugin is deactivated register_deactivation_hook(__FILE__, 'keyword_cloud_deactivation');  // Generate keyword cloud for a post function generate_keyword_cloud($post_id) {     // Retrieve post content     $post = get_post($post_id);     $post_content = $post->post_content;      // Retrieve all words in post content     $words = str_word_count($post_content, 1);      // Count the frequency of each word     $word_counts = array_count_values($words);      // Sort the words by frequency     arsort($word_counts);      // Generate the keyword cloud     echo '<div class="keyword-cloud">';     foreach ($word_counts as $word =&gt; $count) {         echo '<span style="font-size: ' . ($count * 10) . 'px;">' . $word . '</span> ';     }     echo '</div>'; }  // Function to be executed when the plugin is activated function keyword_cloud_activation() {     // Code to be executed when the plugin is activated }  // Function to be executed when the plugin is deactivated function keyword_cloud_deactivation() {     // Code to be executed when the plugin is deactivated }