[英]Symfony's DomCrawler how can I extract meta description from html source
使用 Symfony 的 DomCrawler 如何從 html 源中提取元描述? http://symfony.com/doc/current/components/dom_crawler.html
$crawler = new Crawler();
$crawler->addHtmlContent($html->content, 'UTF-8');
$title = $crawler->filter('title')->text();
MSN 元描述示例
<meta name="description" content="The new MSN, Your customizable collection of the best in news, sports, entertainment, money, weather, travel, health, and lifestyle, combined with Outlook, Facebook, Twitter, Skype, and more."/>
我假設您正在嘗試獲取內容屬性值,因此請嘗試使用
$data = $crawler->filterXpath("//meta[@name='description']")->extract(array('content'));
並循環$data
。
$meta_description = $crawler->filter('meta[name="description"]')->eq(0)->attr('content');
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