PHP Dom Parse-How 得到多个 children

Question

不完全确定我问的是否正确，但就是这样。我有一个具有以下结构的 html 文件：

    <div class="tbody">
    <div class="row">
    <div class="col th">
    <a class="channel_sched_link" href="javascript:void(0)" title="Channel A schedule" data-channelid="9">
   <img src="http://xxxxx/images/tv/A.JPG" width="30" height="20"      alt="Channel A" />Channel A  </a>
  </div>
  <div class="prog_cols">
  <div class="col ts ts_1 prog_802176 ps_0" data-catid="" >
  <span class="prog_name">First Program</span>
  <div class="prog_time">February 24, 2015, 4:00 pm - 6:00 pm</div>
  <a class="btn_watchlist " href="javascript:void(0)" data-progid="802176">  (+) add to watchlist</a>
 <div class="prog_desc">
 This is the first program for channel A.<br/>
 <a class="watchnow" href="http://xxxx/channels/?q=Channel A">Watch Now</a>
 </div>
</div>
<div class="col ts ts_3 prog_802177 ps_1" data-catid="" >
<span class="prog_name">Second Program</span>
<div class="prog_time">February 24, 2015, 6:00 pm - 8:00 pm</div>
<a class="btn_watchlist " href="javascript:void(0)" data-progid="802177">(+)     add to watchlist</a>
<div class="prog_desc">
This is the second program for channel A.<br/>
<a class="watchnow" href="http://www.xxxxx/channels/?q=Channel A">Watch   Now</a>
</div>
</div>
</div>
<a class="watchnow" href="http://xxxx/channels/?q=Channel A">Watch Now</a>
</div>
<div class="row">
<div class="col th">
<a class="channel_sched_link" href="javascript:void(0)" title="Channel B     schedule" data-channelid="1">
 <img src="http://xxxx/images/tv/B.gif" width="30" height="20" alt="Channel B"                                                                                                                           />Channel B    </a>
</div>
<div class="prog_cols">
<div class="col ts ts_1 prog_802210 news ps_0" data-catid="news" >
<span class="prog_name">First Program</span>
<div class="prog_time">February 24, 2015, 5:00 pm - 6:00 pm</div>
<a class="btn_watchlist " href="javascript:void(0)" data-progid="802210">(+)  add to watchlist</a>
<div class="prog_desc">
 First Program Channel B.<br/>
 <a class="watchnow" href="http://xxxxxx/channels/?q=Channel   B">Watch Now</a>
 </div>
 </div>

我能够为每个频道解析 prog_name，但只能通过使用

解析 prog_name 的第一个实例

     $programname = $xpath->query('//span[@class="prog_name"]');

收到此信息后，我会将其与其他信息一起保存到 xml 文件中。我如何解析每个频道的每个 prog_name。我知道这可能与循环有关，但我不知所措。并非每个频道都有相同数量的 prog_name.

Answer 1

这适用于您的 html :

$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXpath($dom);
$childs = $xpath->query('//span[@class="prog_name"]');

foreach ($childs as $child) 
{
    var_dump($child->nodeValue);
}

它 returns :

string(13) "First Program"
string(14) "Second Program"
string(13) "First Program"

PHP Dom Parse-How 得到多个 children

PHP Dom Parse-How to get multiple children

html

php

xml

parsing