在页面中，我需要显示指定类别的所有子类别的列表。

例如，在“运动”类别中，有6个子类别：

游泳、足球、篮球、滑雪、曲棍球每个子类别都有我想展示的特色图片、标题和描述。

我使用以下代码（在functions.php中）添加了特色图像：

add_action(\'init\', \'my_category_module\');
function my_category_module() {
 add_action ( \'edit_category_form_fields\', \'add_image_cat\');
 add_action ( \'edited_category\', \'save_image\');
 }

function add_image_cat($tag){
 $category_images = get_option( \'category_images\' );
 $category_image = \'\';
 if ( is_array( $category_images ) && array_key_exists( $tag->term_id, $category_images ) ) {
 $category_image = $category_images[$tag->term_id] ;
 }
 ?>
 <tr>
 <th scope="row" valign="top"><label for="auteur_revue_image">Image</label></th>
 <td>
 <?php
 if ($category_image !=""){
 ?>
 <img src="<?php echo $category_image;?>" alt="" title=""/>
 <?php
 }
 ?>
 <br/>
 <input type="text" name="category_image" id="category_image" value="<?php echo $category_image; ?>"/><br />
 <span>This field allows you to add a picture to illustrate the category. Upload the image from the media tab WordPress and paste its URL here.</span>
 </td>
 </tr>
 <?php
 }
function save_image($term_id){
 if ( isset( $_POST[\'category_image\'] ) ) {
 //load existing category featured option
 $category_images = get_option( \'category_images\' );
 //set featured post ID to proper category ID in options array
 $category_images[$term_id] =  $_POST[\'category_image\'];
 //save the option array
 update_option( \'category_images\', $category_images );
 }
 }

category.php

<?php
 if(is_category()){
 $category_images = get_option( \'category_images\' );
 $category_image = \'\';
 if ( is_array( $category_images ) && array_key_exists( get_query_var(\'cat\'), $category_images ) ){

$category_image = $category_images[get_query_var(\'cat\')] ;
 ?>
 <img src="<?php echo $category_image;?>"/>
 <?php
 }
 }
 ?>

有了它，我可以显示所有类别及其描述，但如何添加特色图像并仅显示某个类别父级的子类别？

<?php
$categories = get_categories( array(
    \'orderby\' => \'name\',
    \'order\'   => \'ASC\'
) );

foreach( $categories as $category ) {
    $category_link = sprintf( 
        \'<a href="%1$s" alt="%2$s">%3$s</a>\',
        esc_url( get_category_link( $category->term_id ) ),
        esc_attr( sprintf( __( \'View all posts in %s\', \'textdomain\' ), $category->name ) ),
        esc_html( $category->name )
    );

    echo \'<p>\' . sprintf( esc_html__( \'Category: %s\', \'textdomain\' ), $category_link ) . \'</p> \';
    echo \'<p>\' . sprintf( esc_html__( \'Description: %s\', \'textdomain\' ), $category->description ) . \'</p>\';}

谢谢