Php Xpath从多个标记获取文本内容

我有这个HTML模板：

<ul>
<li>
<div>
<span class="field_full"><strong>Title 1</strong></span> :
<span itemprop="alternativeHeadline">
<span itemprop="alternativeHeadline">
DESC 1
</span>
</span></div>
</li>
<li>
<div>
<span class="field_full"><strong>Title 2</strong></span> :
<span itemscope="" itemtype="http://schema.org/type2" itemprop="type2">
<a href="/"><span itemprop="name">DESC 2</span></a>
</span>
</div>
</li>
<li>
<div>
<span class="field_full"><strong> Title 3</strong></span>:
<span itemprop="type3" itemscope="" itemtype="http://schema.org/type3">
<a href="/"><span itemprop="name">DESC 3-1</span></a>, <a href="/"><span itemprop="name">DESC 3-2</span></a>, <a href="/"><span itemprop="name">DESC 3-3</span></a>
</span>
</div>
</li>
<li>
<span class="field_full"><strong>Title 4</strong></span>:
<span> <a href="/">DESC 4</a></span>
</li>
<li>
<span class="field_full"><strong>Title 5</strong></span>:
<span itemprop="type">
<a href="/">DESC 5-1</a>, <a href="/">DESC 5-2</a>
</span>
</li>
<li>
<span class="field_full"><strong>Title 6</strong></span>:
<span itemprop="type">
DESC 6
</span>
</li>
<li>
<span class="field_full"><strong>Title 7</strong></span>:
<span itemprop="type">
DESC 7
</span>
</li>
<li>
<span class="field_full"><strong>Title 8</strong></span>:
<span itemprop="type">
<a href="/">DESC 8</a>
</span>
</li>
</ul>

我试过什么？

$dom = new DOMDocument();
$dom->loadHTML($html_string);
$xpath = new DOMXpath($dom);

$elements = $xpath->query("//span[@class='field_full']");
foreach($elements as $e) {
    echo $e->nodeValue . '<br/>';
}

$dom=newdomdocument（）；
$dom->loadHTML（$html\u字符串）；
$xpath=newdomxpath（$dom）；
$elements=$xpath->query（//span[@class='field\u full']）；
foreach（$e）{
echo$e->nodeValue.“
”；
}

但不幸的是，这只返回标题1、标题2、标题3等

我想得到它们各自的值（在本例中为DESC 1、DESC 2等…）

我可以采取什么方法来实现这个目标

---

Thank’s

下面的表达应该可以做到这一点：

//span[@class=“field\u full”]/以下兄弟姐妹：：span

---

演示：

要获得所需的确切结果，可以使用相对XPath查询，使用原始的

节点作为根：

$elements = $xpath->query("//span[@class='field_full']");
foreach($elements as $e) {
    echo trim($e->nodeValue) . ' = ';
    $spans = $xpath->query("following-sibling::span", $e);
    foreach ($spans as $span) echo " " . trim($span->nodeValue);
    echo "<br/>";
}

$elements=$xpath->query（//span[@class='field\u full']）；
foreach（$e）{
回声微调（$e->nodeValue）。“=”；
$spans=$xpath->query（“以下同级：：span”，$e）；
foreach（$span作为$span）echo”“.trim（$span->nodeValue）；
回声“
”；
}

输出：

Title 1 =  DESC 1<br/>
Title 2 =  DESC 2<br/>
Title 3 =  DESC 3-1, DESC 3-2, DESC 3-3<br/>
Title 4 =  DESC 4<br/>
Title 5 =  DESC 5-1, DESC 5-2<br/>
Title 6 =  DESC 6<br/>
Title 7 =  DESC 7<br/>
Title 8 =  DESC 8<br/>

Title 1=DESC 1

标题2=描述2

标题3=描述3-1、描述3-2、描述3-3

标题4=描述4

标题5=描述5-1，描述5-2

标题6=描述6

标题7=描述7

标题8=描述8

---

我将匹配每个

，然后从每个

中找到相应的数据，以使迭代更容易。
Title 1 =  DESC 1<br/>
Title 2 =  DESC 2<br/>
Title 3 =  DESC 3-1, DESC 3-2, DESC 3-3<br/>
Title 4 =  DESC 4<br/>
Title 5 =  DESC 5-1, DESC 5-2<br/>
Title 6 =  DESC 6<br/>
Title 7 =  DESC 7<br/>
Title 8 =  DESC 8<br/>