尝试添加新帖子时出现以下php错误：

警告：array\\u pop（）要求参数1为数组，布尔值在/home/mysite/public\\u html/blog/wp content/themes/mytheme/functions中给出。php在线675

功能如下：

function glossary_term_permalink($post_link, $post, $leavename, $sample) {
    if (false !== strpos($post_link, \'%recipe_cat%\')) {
        $glossary_letter = get_the_terms($post->ID, \'recipe_cat\');
        $post_link = str_replace(\'%recipe_cat%\', array_pop($glossary_letter)->slug, $post_link);
    }
    return $post_link;
}