每次我在下面的函数中调用WP\\u Query（），Wordpress都会泄漏8兆内存。因为我经常调用这个函数，所以事情很快就变得复杂了…：（我尝试过取消生成的$queryObject的设置，并定期调用wp\\u cache\\u flush（），但这两种方法似乎都没有任何效果。有什么想法吗？

function get_post_ids_in_taxonomies($taxonomies, &$terms=array()) {
    $post_ids = array();

    $query = gen_query_get_posts_in_taxonomies($taxonomies, $terms);
    // var_dump($query);

    //Perform the query
    $queryObject = new WP_Query($query); //*****THE 8 MEGABYTES IS LEAKED HERE*****

    //For all posts found...
    if($queryObject->have_posts()) {
        while($queryObject->have_posts()) {
            $queryObject->the_post();

            //Get the $post_id by capturing the output of the_ID()
            ob_start();
            the_ID();
            $post_id = (int) ob_get_contents();
            ob_end_clean();

            // echo $post_id."\\n";
            $post_ids[] = $post_id;
        }
    }

    unset($queryObject);

    return $post_ids;
}

gen\\u query\\u get\\u posts\\u in\\u taxonomies（）是：

function gen_query_get_posts_in_taxonomies($taxonomies, &$terms=array()) {
    //General query params
    $query = array(
        \'posts_per_page\'    => -1,  //Get all posts (no paging)
        \'tax_query\'             => array(\'relation\' => \'OR\'),
    );

    //Add the specific taxonomies and terms onto $query[\'tax_query\']
    foreach($taxonomies as $tax) {
        //Get terms in the taxonomies if we haven\'t yet
        if(!array_key_exists($tax, $terms)) {
            $terms[$tax] = array();

            $terms_tmp = get_terms($tax);
            foreach($terms_tmp as $tt)
                $terms[$tax][] = $tt->term_taxonomy_id;
        }

        $query[\'tax_query\'][] = array(
            \'taxonomy\' => $tax,
            \'terms\' => $terms[$tax],
            \'field\' => \'term_taxonomy_id\',
        );
    }

    return $query;
}