如何在 PHP 中使用正则表达式提取 HTML 内容

发布于 2024-08-31 21:45:04 字数 894 浏览 6 评论 0原文

我知道，我知道...正则表达式不是提取 HTML 文本的最佳方法。但我需要从很多页面中提取文章文本，我可以将正则表达式存储在每个网站的数据库中。我不确定 XML 解析器如何与多个网站一起工作。您需要为每个网站提供单独的功能。

无论如何，我对正则表达式了解不多，所以请耐心等待。

我有一个格式与此类似的 HTML 页面，

<html>
<head>...</head>
<body>
    <div class=nav>...</div><p id="someshit" />
    <div class=body>....</div>
    <div class=footer>...</div>
</body>

我需要提取主体类容器的内容。

我试过这个。

$pattern = "/<div class=\"body\">\(.*?\)<\/div>/sui"
$text = $htmlPageAsIs;
if (preg_match($pattern, $text, $matches))
    echo "MATCHED!";
else
    echo "Sorry gambooka, but your text is in another castle.";

我做错了什么？我的文字最终到达了另一座城堡。

*编辑：哦...没关系，我发现了可读性代码

原文

I know, i know... regex is not the best way to extract HTML text. But I need to extract article text from a lot of pages, I can store regexes in the database for each website. I'm not sure how XML parsers would work with multiple websites. You'd need a separate function for each website.

In any case, I don't know much about regexes, so bear with me.

I've got an HTML page in a format similar to this

<html>
<head>...</head>
<body>
    <div class=nav>...</div><p id="someshit" />
    <div class=body>....</div>
    <div class=footer>...</div>
</body>

I need to extract the contents of the body class container.

I tried this.

$pattern = "/<div class=\"body\">\(.*?\)<\/div>/sui"
$text = $htmlPageAsIs;
if (preg_match($pattern, $text, $matches))
    echo "MATCHED!";
else
    echo "Sorry gambooka, but your text is in another castle.";

What am I doing wrong? My text ends up in another castle.

*EDIT: ooohh... never mind, I found readability's code

分享到QQ

分享到微博