如何在php中过滤the_content()函数，只返回一个特定的div类？

$content = the_content(); // 获取the_content()函数返回的内容

// 使用正则表达式匹配特定的div类
preg_match('/<div class="your-div-class">(.*?)<\/div>/s', $content, $matches);

if (isset($matches[0])) {
    $filteredContent = $matches[0]; // 获取匹配到的内容
    echo $filteredContent;
} else {
    echo "No matching div found.";
}

$content = the_content(); // 获取the_content()函数返回的内容

$dom = new DOMDocument();
$dom->loadHTML($content);

$xpath = new DOMXPath($dom);

// 使用XPath查询获取特定的div类
$divClass = 'your-div-class';
$divs = $xpath->query("//div[contains(@class, '$divClass')]");

if ($divs->length > 0) {
    $filteredContent = $dom->saveHTML($divs->item(0)); // 获取第一个匹配到的div内容
    echo $filteredContent;
} else {
    echo "No matching div found.";
}