我有一个包含要导入到“campsite district county”分类法的类别和子类别的数组。我的子类别没有插入正确的父类别。它们正在根级别插入。在进行了一些调查之后，我遇到了在每次插入之后清除分类缓存所需的信息，所以我这样做了，但我仍然有同样的问题。

$dist[]=array(\'Açores\',\'Angra do Heroísmo\');
$dist[]=array(\'Açores\',\'Corvo\');
$dist[]=array(\'Aveiro\',\'Águeda\');
$dist[]=array(\'Aveiro\',\'Anadia\');
foreach($dist as $d) {
    $i++;
    if(is_array($d)) {
        if ($parent_term=term_exists(trim($d[0]), \'campsite-district-county\')) {
            //do nothing - let\'s add the county bellow
        } else {
            //Adds district
            $parent_term=wp_insert_term(trim($d[0]), \'campsite-district-county\');
            delete_option("campsite-district-county");
            wp_cache_flush();
            echo \'<h1>\'.trim($d[0]).\'</h1>\';

        }
        $id_parent=intval($parent_term[\'term_id\']);
        echo \'<p>*\'.$id_parent.\'*</p>\';
        //Add county
        $child_term=wp_insert_term(trim($d[1]), \'campsite-district-county\', array(\'parent\', $id_parent));
        delete_option("campsite-district-county_children");
        wp_cache_flush();
        echo \'<p>\'.trim($d[1]).\'</p>\';
    }
}