简单Dom解析器在表中获取跨度值

Question

我正在使用Simple DOM Parser，我正试图从一个动态表中获取一些信息，该表看起来如下：

<table />
<tr>
   <td class="histogram-msg top-row">5 star</td>
   <td class="top-row bar-cell"><span class="bar bar5" style="width:150px">&nbsp;</span>&nbsp;<span>55</span></td>
</tr>
<tr>
   <td class="middle-row histogram-msg">4 star</td>
   <td class="middle-row bar-cell"><span class="bar bar4" style="width:65px">&nbsp;</span>&nbsp;<span>24</span></td>
</tr>
<tr>
   <td class="middle-row histogram-msg">3 star</td>
   <td class="middle-row bar-cell"><span class="bar bar3" style="width:38px">&nbsp;</span>&nbsp;<span>14</span></td>
</tr>
<tr>
   <td class="middle-row histogram-msg">2 star</td>
   <td class="middle-row bar-cell"><span class="bar bar2" style="width:19px">&nbsp;</span>&nbsp;<span>7</span></td>
</tr>
<tr>
   <td class="bottom-row histogram-msg">1 star</td>
   <td class="bottom-row bar-cell"><span class="bar bar1" style="width:35px">&nbsp;</span>&nbsp;<span>13</span></td>
</tr>
</table>

我正在尝试获取表中的值，即：5星|55、4星|24等。

我通过$ret = $html->find('.user-ratings');获得这些信息，当我尝试打印span标签时，它只会给我一堆空白。

如何从上表中获取评级类型和值？

Answer 1

这将完成您想要做的事情：

<?php
include('simple_html_dom.php');
$f = file_get_html('s.html');
foreach($f->find('td[class=histogram-msg]') as $n) {
foreach($n->parent()->find('td[class=bar-cell]') as $p) {
    $ratings[] = array('stars' => $n->innertext, 
   'rating' => strip_tags(str_replace("&nbsp;", "", $p)));
    }
}
print_r($ratings);
Array
(
[0] => Array
    (
        [stars] => 5 star
        [rating] => 55
    )
[1] => Array
    (
        [stars] => 4 star
        [rating] => 24
    )
[2] => Array
    (
        [stars] => 3 star
        [rating] => 14
    )
[3] => Array
    (
        [stars] => 2 star
        [rating] => 7
    )
[4] => Array
    (
        [stars] => 1 star
        [rating] => 13
    )
)