问使用symfony dom爬虫提取无标记元素

EN

$dom = new DOMDocument();
$dom->loadHTML('<strong>title</strong>Hello World<strong>Sub-Title</strong><div>This is just stuff</div>');
$xpath = new DOMXPath($dom);
// use the fact that PHP DOM wraps everything into the body and get the text()
$entries = $xpath->query('//body/text()');
foreach ($entries as $entry) {
    echo $entry->nodeValue;
}

$ExtractText = $crawler->filter('strong')->eq(1)->text();