我在插入术语方面确实有一些问题。下面是我的场景：我有一个名为veda\\u release\\u type的分类法：

//Release Type and Region
        $labels = array(
            \'name\'=> _x(\'Release Types/Regions\', \'taxonomy general name\' ),
            \'singular_name\' => _x(\'Release Type/Region\', \'taxonomy singular name\'),
            \'search_items\' => __(\'Search Release Types/Regions\'),
            \'popular_items\' => __(\'Popular Release Types/Regions\'),
            \'all_items\' => __(\'All Release Types/Regions\'),
            \'edit_item\' => __(\'Edit Release Type/Regions\'),
            \'edit_item\' => __(\'Edit Release Type/Region\'),
            \'update_item\' => __(\'Update Release Type/Region\'),
            \'add_new_item\' => __(\'Add New Release Type/Region\'),
            \'new_item_name\' => __(\'New Release Type/Region Name\'),
            \'separate_items_with_commas\' => __(\'Seperate Release Types/Regions with Commas\'),
            \'add_or_remove_items\' => __(\'Add or Remove Release Types/Regions\'),
            \'choose_from_most_used\' => __(\'Choose from Most Used Release Types/Regions\')
        );
        $args = array( 
            \'hierarchical\' =>true,  
            \'labels\' => $labels,  
            \'query_var\' => true,  
            \'rewrite\' => array(\'slug\' =>\'release_type\')     
        );
        register_taxonomy(\'veda_release_type\', \'veda_release\',$args);

这显然是等级制度。顶层包含发行类型ieDVD、blu-ray。下面的级别是区域，即区域1、区域2等。因此，我想要的层次结构是：DVD--区域0--区域1--区域2--区域3--区域4--区域5--区域6Blu射线--区域A--区域B--区域C

我在类中创建了一个名为insert\\u term的函数，以检查是否存在一个术语，如果不存在，则插入该术语：

public function insert_term ($term, $taxonomy, $args = array()) {
        if (isset($args[\'parent\'])) {
            $parent = $args[\'parent\'];
        } else {
            $parent = 0;
        }
        $result = term_exists($term, $taxonomy, $parent);
        if ($result == false || $result == 0) {
            return wp_insert_term($term, $taxonomy, $args);             
        } else {
            return (array) $result;
        }       
}

然后我调用所述函数插入术语：

    $dvd = $this->insert_term(\'DVD\',\'veda_release_type\');
    $this->insert_term(\'Region 0\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 1\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 2\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 3\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 4\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 5\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));
    $this->insert_term(\'Region 6\',\'veda_release_type\',array(\'parent\'=>$dvd[\'term_id\']));

    $bd = $this->insert_term(\'Blu-Ray\', \'veda_release_type\');
    $this->insert_term(\'Region A\',\'veda_release_type\',array(\'parent\'=>$bd[\'term_id\']));
    $this->insert_term(\'Region B\',\'veda_release_type\',array(\'parent\'=>$bd[\'term_id\']));
    $this->insert_term(\'Region C\',\'veda_release_type\',array(\'parent\'=>$bd[\'term_id\']));

我遇到的问题是，即使这些术语输入到数据库中，它们也不会显示在分类页面上。最多会出现顶级术语。我必须尝试各种方法，直到它迫使WordPress认识到次级术语。有没有人遇到过这种情况，或者可以推荐一种更好的方法？

编辑：注意到了其他一些事情：我尝试从数据库中删除这些术语，然后停用并重新激活声明这些术语的插件。两个父术语显示在术语页面中，但子术语不显示。子术语确实会显示在要创建新术语的“父”下拉菜单中。当我添加一个其父项是子项之一的项并刷新页面时，子项就会显示出来。

$bd[\'term_id\']
$dvd[\'term_id\']

return $result;

return is_object( $result ) ? (array) $result : $result;

delete_option(\'veda_release_type\');
wp_cache_flush();

$PARENT_CAT= wp_insert_term(\'Parent_category_NAME\',\'category\',  array(\'slug\'=> \'Parent_category_NAME\'));
delete_option("category_children");
wp_cache_flush();

    $child= wp_insert_term(\'children_category_NAME\',\'category\',array( \'slug\'=>\'children_category_NAME\', \'parent\' =>$PARENT_CAT[\'term_id\']));
    delete_option("category_children");
    wp_cache_flush();

add_action( \'admin_init\', \'updateTermChildren\' );
function updateTermChildren(){    
   _get_term_hierarchy(\'product_cat\');
}`