使用 html dom 和类名抓取数据

Question

我在这里尝试从网页中获取地址和电话号码。这是没有给出任何错误但也没有给出任何结果的代码。

有什么问题吗？

我正在尝试从页面中获取address、image 和phone。

代码如下：

include_once('simple_html_dom.php');
function getData($url)
{
    print("$url\n");
    $root = new stdClass();
    $items = array();
    $html = file_get_html($url);
    if($html) {
        $containers = $html->find('div.mapbox div.mapbox-text strong.street-address address.address');
        foreach($containers as $container) {
            $comments = $container->find('address.address span');
            $item = new stdClass();
            foreach($comments as $comment) {
                $address.= $comment->itemprop; //append the content of each span
            }
            echo $address;

            $getphone = $container->find('span.biz-phone');
            $phone = $getphone->itempro;
        }   

        $Imgcontainers = $html->find('div.js-photo photo photo-1 div.showcase-photo-box img.a la beverly sills');
        echo $Imgcontainers->img;
    }
}

$url = 'http://www.yelp.com/biz/locanda-san-francisco?start='.$i.'';
$root = getData($url);

Answer 1

在<address> 标签中没有address 类，所以$containers 返回空。在您的 if 条件中使用以下代码

$containers = $html->find('div.mapbox div.mapbox-text strong.street-address address');
foreach($containers as $container) {
   $comments = $container->find('span');
   $item = new stdClass();
   foreach($comments as $comment) {
       $address.= $comment->itemprop; //append the content of each span
   }
   echo $address;

   $getphone = $container->find('span.biz-phone');
   $phone = $getphone->itempro;
}
$Imgcontainers = $html->find('div.js-photo photo photo-1 div.showcase-photo-box img.a la beverly sills');
echo $Imgcontainers->img;