这一条让我感到困惑，因为该代码已经运行了2年，但在最近的WordPress更新到4.7之后，它通过了一个fit。

WordPress正在抛出可捕获的错误致命错误：在函数的第42行，stdClass类的对象无法转换为字符串。php，恰好是这一行：

WHERE {$wpdb->terms}.term_id = {$term_id}

// Detects Category ID for category Info custom post type
function wph_wp() {
global $wpdb, $cc_post_id;

$terms = null;
$cc_post_id = null;

if (is_category()) {
    $term = get_queried_object();
    $terms = array($term->term_id);
} elseif (is_single()) {
    $post = get_queried_object();
    $terms = wp_get_post_categories($post->ID);
}

if (!empty($terms)) {
    foreach ($terms as $term_id) {
        $cc_post_id = $wpdb->get_var($wpdb->prepare("
            SELECT {$wpdb->posts}.ID FROM {$wpdb->terms} 
            JOIN {$wpdb->term_taxonomy} ON {$wpdb->terms}.term_id = {$wpdb->term_taxonomy}.term_id AND {$wpdb->term_taxonomy}.taxonomy = \'category\'
            JOIN {$wpdb->term_relationships} ON {$wpdb->term_taxonomy}.term_taxonomy_id = {$wpdb->term_relationships}.term_taxonomy_id
            JOIN {$wpdb->posts} ON {$wpdb->term_relationships}.object_id = {$wpdb->posts}.ID AND post_type = \'category_info\'
            WHERE {$wpdb->terms}.term_id = {$term_id}
        ", ""));
        if (!empty($cc_post_id)) {
            break;
        }
    }
}
}