这个render_block 过滤器可以做到这一点-我刚刚测试了一个新的安装。但是，您必须使用最终的HTML，因此它有点难看。

以下代码将复制第一个<a> 标记副本并将其环绕<time> 列表中的标记。

\\add_filter(\'render_block\', function($content, $parsed): string {
        // skip other blocks
        if ($parsed[\'blockName\'] !== \'core/latest-posts\') {
                return $content;
        }

        // skip latest posts that don\'t display the date
        if (empty($parsed[\'attrs\'][\'displayPostDate\']) || !$parsed[\'attrs\'][\'displayPostDate\']) {
                return $content;
        }

        $dom = new \\DomDocument();
        // parse the HTML, the @ is required because DomDocument
        // doesn\'t know about HTML5\'s <time>
        @$dom->loadHTML($content);

        // get each individual post
        foreach ($dom->getElementsByTagName(\'li\') as $entry) {
                $links = $entry->getElementsByTagName(\'a\');
                if ($links->count() === 0) {
                        continue;
                }

                foreach ($entry->getElementsByTagName(\'time\') as $time) {
                        // clone the first <a>
                        $link = $links->item(0)->cloneNode();
                        // wrap the <time> around that <a>
                        $time->parentNode->replaceChild($link, $time);
                        $link->appendChild($time);
                }
        }

        // $dom->saveHTML() returns false on error
        $newContent = $dom->saveHTML();
        if ($newContent !== false) {
            return $newContent;
        }

        return $content;
}, 10, 2);