WordPress显示当前文章分类和父分类的链接

当需要显示文章的父分类和当前分类链接时，我们可以使用这段代码：

$categories = get_the_category();
echo \'<ul>\';
echo \'<li> Parent Category: \';
foreach( $categories as $category ){
     if($category->parent != 0){
          $parent_category = get_term( $category->parent );
          echo \'<a href=\"\' . esc_url( get_category_link($parent_category->term_id)) . \'\">\' . esc_html($parent_category->name) . \' </a>\';
          break;
     }
}
echo \'</li>\';
echo \'<li>Subcategory: \';
foreach( $categories as $category ){
     if($category->parent != 0){
          echo \'<a href=\"\' . esc_url( get_category_link($category->term_id)) . \'\">\' . esc_html($category->name) . \' </a>\';
     }
}
echo \'</li></ul>\';

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