获取 href 属性

Question

我有这个 php 代码：

$main_url = "http://www.sports-reference.com/olympics/countries/DEN/summer/1896/";
$main_html=file_get_html($main_url);

$link = $main_html->getElementById('div_sports');

    foreach ($link->find('td') as $element){


        foreach($element->find('href') as $node){

        echo $node->item(0)->nodeValue . "\n";
        //$link_clean = $node->getAttribute('href');
        echo $link_clean . "\n";

        }

    }

如果我打印出 $element，我会得到以下输出：

<td align="left" ><a href="/olympics/countries/DEN/summer/1896/ATH/">Athletics</a></td>
<td align="left" ><a href="/olympics/countries/DEN/summer/1896/FEN/">Fencing</a></td>
<td align="left" ><a href="/olympics/countries/DEN/summer/1896/GYM/">Gymnastics</a></td>
<td align="left" ><a href="/olympics/countries/DEN/summer/1896/SHO/">Shooting</a></td>
<td align="left" ><a href="/olympics/countries/DEN/summer/1896/WLT/">Weightlifting</a></td>

我需要提取此信息：

/olympics/countries/DEN/summer/1896/ATH/ /奥运会/国家/DEN/summer/1896/FEN/ ..........

等等。上面的代码不起作用。你能帮我吗？

Answer 1

href不是标签，是标签属性。

所以，你必须搜索<a>：

foreach( $element->find('a') as $a)
{
    echo $a->href . "\n";
    (...)
}