我有3个自定义分类法。前两个用于汽车品牌和型号，第三个用于汽车系列。目标是制作一个小部件，根据当前帖子（品牌和型号）列出汽车系列。

function getCarListings() {

    global $post;
    //$post_id = $post->id;
    setup_postdata( $post );
    $post_id = get_the_ID();
    echo \'<h2>\' . $post_id  . \'</h2>\';

    $makeArray = get_the_terms($post_id, \'make\'); //make taxonomy for current post
    //print_r($makeArray);
    $makeTag = $makeArray[0]->name;
    //print_r($makeTag );

    $modelArray = get_the_terms($post_id, \'model\'); //model taxonomy for current post
    $modelTag = $modelArray[0]->name;


    //add_image_size( \'realty_widget_size\', 85, 45, false );
    $mytaxomomies= array(
        // \'relation\' => \'AND\',
        array(
            \'taxonomy\' => \'make\',
            \'terms\' => array( $makeTag ),
            \'field\'    => \'slug\',
            \'operator\'=> \'AND\',
        ),
        array(
            \'taxonomy\' => \'model\',
            \'terms\' =>  array( $modelTag ),
            \'field\'    => \'slug\',
            \'operator\'=> \'AND\',
        )
    );

    $args = array(
        \'post_type\'=>\'listings\',
        \'tax_query\'=> $mytaxomomies,
    );
    $listings = new WP_Query($args);
    $term_array = [];
//  $listings->query(\'post_type=listings&posts_per_page=-1\' );  
    if($listings->found_posts > 0) {

            while ($listings->have_posts()) {
                $post_get = get_the_ID();
                $term_get = get_the_terms($post_get, \'Car_Series\');
                $term_array = $term_get;
                 print_r($term_get);
                array_push( $term_array, $term_get);

            }
        print_r($term_array);
        wp_reset_postdata(); 
    }else{
        echo \'<p style="padding:25px;">No listing found</p>\';
    }

 }

顶部获取主页的post id，我可以从中检索汽车品牌和车型。然后，我对这两个分类法进行循环，尝试将第三个分类法术语检索到一个term\\u数组中。但看起来print_r($term_array) 为空，但print_r($term_get) 显示我的WP对象。

为什么我不能检索最后一个数组上的术语集合($term_array)?

        while ( $listings->have_posts() ) {
            /*** Add the following line: ***/
            $listings->the_post();

            $post_get = get_the_ID();
            $term_get = get_the_terms($post_get, \'Car_Series\');
            $term_array = $term_get;
            print_r($term_get);
            array_push( $term_array, $term_get);
        }