dongyun3805 2013-10-31 08:09 采纳率: 0%
浏览 50
已采纳

如何使用PHP中的DOM遍历和获取HTML中的特定标记？

I am using the SimpleHTMLDom library in PHP and i am able to fetch the nodes from my HTML data. For example i have a html data as below :

<html>
<body>
<table>
<tr>
<td>One</td>
<td>Two</td>
<td>Three</td>
</tr>
</table>
</body>
<html>

and i am using the parsing code as :

foreach($html->find('td') as $element)
echo $element->plaintext . '<br>';

But this code gives result as :

One<br/>
Two<br/>
Three<br/>

What i want is that i want the result "One" in say variable $one, "Two" in $two and "Three" in $three. The problem is that how can i get a particular table column element in a particular variable. I want to traverse irrespective of ID or class. Like I want to get like 3rd occurrence of the tag in the HTML data. Thanks. The SIMPLEHTMLDOM.sourceforge.com manual is not understandable.

  • 写回答

2条回答 默认 最新

  • douyanpeng0748 2013-10-31 08:32
    关注

    The find() method accepts a second optional parameter: the index of the element.

    echo $html->find('td', 2);

    Output:

    Three

    nb1: if index is set, it returns the Nth element object, otherwise, return an array of object.

    nb2: the parameter is zero based, it means that the the index of the first element is 0

    You can also use the array to access to your element:

    $elements = $html->find('td');
echo $elements[2];

    Output:

    Three

    doc: http://simplehtmldom.sourceforge.net/manual_api.htm

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)

报告相同问题？

悬赏问题

  • ¥15 echarts动画效果失效的问题。官网下载的例子。
  • ¥60 许可证msc licensing软件报错显示已有相同版本软件，但是下一步显示无法读取日志目录。
  • ¥15 Attention is all you need 的代码运行
  • ¥15 一个服务器已经有一个系统了如果用usb再装一个系统，原来的系统会被覆盖掉吗
  • ¥15 使用esm_msa1_t12_100M_UR50S蛋白质语言模型进行零样本预测时，终端显示出了sequence handled的进度条，但是并不出结果就自动终止回到命令提示行了是怎么回事：
  • ¥15 前置放大电路与功率放大电路相连放大倍数出现问题
  • ¥30 关于<main>标签页面跳转的问题
  • ¥80 部署运行web自动化项目
  • ¥15 腾讯云如何建立同一个项目中物模型之间的联系
  • ¥30 VMware 云桌面水印如何添加