解析XPath --有麻烦吗？

Question

在过去的几个小时里，我取得了很大的进步，终于碰壁了。

下面是我的代码：

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$info = curl_exec($ch);

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


$xpath = new DOMXPath($html);
$texts = $xpath->query("//div[@class='summary-gems']/ul/li");
$imgs = $xpath->query("//div[@class='summary-gems']/ul/li");

for ($i = 0; $i < $texts->length; $i++) {
$gems[$i]['text'] = $texts->item($i)->nodeValue;
$gems[$i]['img'] = $imgs->getAttribute('href');

echo $gems[$i]['img'];
die;
}

下面是XHTML现在的样子：

<div class="summary-gems">
    <ul>
        <li>
            <span class="value">5</span>
            <span class="times">x</span>
            <span class="icon">
                <span class="icon-socket socket-2">
                    <a href="/wow/en/item/52207" class="gem">
                        <img src="http://us.battle.net/wow-assets/static/images/icons/18/inv_misc_cutgemsuperior6.jpg" alt="" />
                        <span class="frame"></span>
                    </a></span></span>
            <a href="/wow/en/item/52207" class="name color-q3">Brilliant Inferno Ruby</a>
            <span class="clear">
                <!-- -->
            </span>
        </li>
        <li>
            <span class="value">3</span>
            <span class="times">x</span>
            <span class="icon">
                <span class="icon-socket socket-10">
                    <a href="/wow/en/item/52236" class="gem">
                        <img src="http://us.battle.net/wow-assets/static/images/icons/18/inv_misc_cutgemsuperior3.jpg" alt="" />
                        <span class="frame"></span>
                    </a></span></span>
            <a href="/wow/en/item/52236" class="name color-q3">Purified Demonseye</a>
            <span class="clear">
                <!-- -->
            </span>
        </li>
        <li>
            <span class="value">3</span>
            <span class="times">x</span>
            <span class="icon">
                <span class="icon-socket socket-6">
                    <a href="/wow/en/item/68356" class="gem">
                        <img src="http://us.battle.net/wow-assets/static/images/icons/18/inv_misc_cutgemsuperior4.jpg" alt="" />
                        <span class="frame"></span>
                    </a></span></span>
            <a href="/wow/en/item/68356" class="name color-q3">Willful Ember Topaz</a>
            <span class="clear">
                <!-- -->
            </span>
        </li>
        <li>
            <span class="value">1</span>
            <span class="times">x</span>
            <span class="icon">
                <span class="icon-socket socket-1">
                    <a href="/wow/en/item/52298" class="gem">
                        <img src="http://us.battle.net/wow-assets/static/images/icons/18/inv_misc_metagem_b.jpg" alt="" />
                        <span class="frame"></span>
                    </a></span></span>
            <a href="/wow/en/item/52298" class="name color-q3">Destructive Shadowspirit Diamond</a>
            <span class="clear">
                <!-- -->
            </span>
        </li>
    </ul>
</div>

当我得到它的“text”部分时，我就得到了那个特定节点中的纯文本(在这个事件中有4个)。如果可能的话，我想要的是所有的XHTML。如果不是，那么我要做的就是为每个节点获取"image source“和"hyperlink class 'gem'”。对于如何在此事件中获取节点的纯文本以外的任何内容，我感到有点困惑。

任何帮助都将不胜感激！如果你有任何问题请告诉我。

Answer 1

链接的XPath为

//div[@class='summary-gems']/ul//a[@class='gem']

并且您可以使用以下命令访问该属性

(string)$simplexmlelement['href']

对<img src="..">执行相同的操作。

要获取元素的完整XML，请使用$simplexmlelement->asXML()。