如何在 PHP 中解析 HTML? [英] How to parse HTML in PHP?

问题描述

我知道我们可以使用 PHP DOM 使用 PHP 解析 HTML.我在 Stack Overflow 上也发现了很多问题.但我有一个特定的要求.我有一个像下面这样的 HTML 内容

I know we can use PHP DOM to parse HTML using PHP. I found a lot of questions here on Stack Overflow too. But I have a specific requirement. I have an HTML content like below

<p class="Heading1-P">
    <span class="Heading1-H">Chapter 1</span>
</p>
<p class="Normal-P">
    <span class="Normal-H">This is chapter 1</span>
</p>
<p class="Heading1-P">
    <span class="Heading1-H">Chapter 2</span>
</p>
<p class="Normal-P">
    <span class="Normal-H">This is chapter 2</span>
</p>
<p class="Heading1-P">
    <span class="Heading1-H">Chapter 3</span>
</p>
<p class="Normal-P">
    <span class="Normal-H">This is chapter 3</span>
</p>

我想解析上面的 HTML 并将内容保存到两个不同的数组中，例如:

I want to parse the above HTML and save the content into two different arrays like:

$heading 和 $content

$heading = array('Chapter 1','Chapter 2','Chapter 3');
$content = array('This is chapter 1','This is chapter 2','This is chapter 3');

我可以简单地使用 jQuery 来实现这一点.但我不确定，这是否是正确的方法.如果有人能指出我正确的方向，那就太好了.提前致谢.

I can achieve this simply using jQuery. But I am not sure, if that's the right way. It would be great if someone can point me to the right direction. Thanks in advance.

推荐答案

试试看PHP Simple HTML DOM Parser

它具有类似于 jQuery 的出色语法，因此您可以轻松地通过 ID 或类选择您想要的任何元素

It has brilliant syntax similar to jQuery so you can easily select any element you want by ID or class

// include/require the simple html dom parser file

$html_string = '
    <p class="Heading1-P">
        <span class="Heading1-H">Chapter 1</span>
    </p>
    <p class="Normal-P">
        <span class="Normal-H">This is chapter 1</span>
    </p>
    <p class="Heading1-P">
        <span class="Heading1-H">Chapter 2</span>
    </p>
    <p class="Normal-P">
        <span class="Normal-H">This is chapter 2</span>
    </p>
    <p class="Heading1-P">
        <span class="Heading1-H">Chapter 3</span>
    </p>
    <p class="Normal-P">
        <span class="Normal-H">This is chapter 3</span>
    </p>';
$html = str_get_html($html_string);
foreach($html->find('span') as $element) {
    if ($element->class === 'Heading1-H') {
        $heading[] = $element->innertext;
    }else if($element->class === 'Normal-H') {
        $content[] = $element->innertext;
    }
}

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