wordpress 在分类目录为分类添加分类类型

 // 分类添加字段  
function add_taxonomy_field(){  
    $type = ['article' => '文章', 'product' => '产品', 'case' => '案例'];
    $html = '
类型'; 
    foreach($type as $key => $val) {
        $html .= '' . $val; 
    }
    $html .= '
';     
    echo $html;   
}  
add_action('category_add_form_fields','add_taxonomy_field',10,2);  


// 分类编辑字段  
function edit_taxonomy_field( $tag ){  
    $value =  get_option('tag-type-'.$tag->term_id);
    $type = ['article' => '文章', 'product' => '产品', 'case' => '案例'];
    $html = '类型'; 
    foreach($type as $key => $val) {
        if ( $value == $key ) {
            $html .= '' . $val;
        } else {
            $html .= '' . $val;
        }
         
    }
    $html .= '';        
    echo $html;
}  
add_action('category_edit_form_fields','edit_taxonomy_field',10,2);  

// 保存数据  
function save_taxonomy_field( $term_id ){  
    if( isset($_POST['tag-type']) ){  
        //判断权限--可改  
        if(!current_user_can('manage_categories')){  
            return $term_id;  
        }  

        $tag_type_key = 'tag-type-'.$term_id; 
        $tag_type_value = $_POST['tag-type']; 
              
        // 更新选项值  
        update_option( $tag_type_key, $tag_type_value );   
    }  
}  

function taxonomy_setup() {
    add_action('created_category','save_taxonomy_field',10,1);  
    add_action('edited_category','save_taxonomy_field',10,1);
}

add_action( 'admin_init', 'taxonomy_setup' );