XML Xpath 使用 PHP

Question

这是我的 XML:

<div class="main">  
    <div class="workshoplist-main">
        <div class="toggler pointer">
            <i class="icon-chevron-down"></i> 
            <span id="rpt_0_lblSectionHeader_0">Wednesday, March 18, 2015 (10:00 AM - 11:00 AM)</span> 
            <p>Description of March info</p>
        </div>
    </div>
    <div class="workshoplist-main">
        <div class="toggler pointer">
            <i class="icon-chevron-down"></i> 
            <span id="rpt_0_lblSectionHeader_1">Thursday, April 16, 2015 (10:00 AM - 11:00 AM)</span> 
            <p>Description of April info</p>
        </div>
    </div>
    <div class="workshoplist-main">
        <div class="toggler pointer">
            <i class="icon-chevron-down"></i> 
            <span id="rpt_0_lblSectionHeader_2">Friday, March 19, 2015 (10:00 AM - 11:00 AM)</span> 
            <p>Description of March info</p>
        </div>
    </div>  
</div>

我想在包含 id 中的 lblSectionHeader 的 span 元素中查找单词 March。

我想要的 return 值是：

 Wednesday, March 18, 2015 (10:00 AM - 11:00 AM)
 Friday, March 19, 2015 (10:00 AM - 11:00 AM)

我的代码是：

xpath("//div[contains(@class,'workshoplist-main') and //span[contains(@id,'lblSectionHeader')][text()='March']]");

我没有得到任何结果。如果有人能提供帮助，那就太好了。

Answer 1

以下查询有效：

$html = <<<'EOF'
    ... Your HTML comes here ...
EOF;

$doc = new DOMDocument();
$doc->loadHTML($html);

$selector = new DOMXPath($doc);
$query = "//div[contains(@class,'workshoplist-main')]//span[contains(@id,'lblSectionHeader')][contains(text(), 'March')]";

foreach($selector->query($query) as $node) {
    // do something with that node
    var_dump($node);
}

您在查询中误用了 and 关键字。如果你想 select <span> 标签在 <div> 标签下面（不管嵌套级别如何）那么使用 //div//span，而不是 //div and //span

XML Xpath 使用 PHP

XML Xpath using PHP

php

xml

xpath