如何在PHP中删除文本的html部分

I have a question about parsing text and removing unwanted html parts. I know functions like - strip_tags() which will remove all the tags, but the problem is, that this function leaves the "inside text" there.

我有一个关于解析文本和删除不需要的HTML部分的问题。我知道像strip_tags()这样的函数会删除所有标签,但问题是,这个函数在那里留下了“内部文本”。

Let me show you an example, we have a text:

让我举个例子,我们有一个文字:

Hello, how are you? <a href="">Link to my website</a> __Here continues html tags, links, images__

What I want is to remove the whole part, where html resides. Not only tags, but also text (like "Link to my website" above).

我想要的是删除html所在的整个部分。不仅是标签,还有文字(如上面的“链接到我的网站”)。

Is there any efficient way, function that I missed?

有没有有效的方法,我错过了什么功能?

7 个解决方案

#1

Try this:

function removeTags($str) {
    $result = '';

    $xpath = new DOMXPath(DOMDocument::loadHTML(sprintf('<body>%s</body>', $str)));
    foreach ($xpath->query('//body/text()') as $textNode) {
        $result .= $textNode->nodeValue;
    }

    return $result;
}

echo removeTags(
    'Hello, how are you? <a href="">Link to my website</a> __Here continues html <span>tags</span>, links, images__'
);

Output:

Hello, how are you? __Here continues html , links, images__

#2

Why not make it a rule that the submittet input are not allowed to contain tags.

为什么不规定submittet输入不允许包含标记。

function containsIllegalHtml($input, $allowable_tags = '') {
    if($input != strip_tags($input, $allowable_tags)) {
        return true;
    } else {
        return false;
    }
}

Use this function to check wether the input contains tags or not.

使用此功能检查输入是否包含标签。

#3

you may write a function that takes a string and it uses php string capabilities to get the position of the "<" and then the position of the ">" and strip them from the input string

你可以编写一个带字符串的函数,它使用php字符串函数获取“<”的位置,然后是“>”的位置,并从输入字符串中删除它们

#4

maybe its not correct, but...

也许它不正确,但......

$str = 'Hello, how are you? <a href="">Link to my website</a> __Here continues html tags, links, ';
$rez = preg_replace("/\<.*\>/i",'',$str);
var_dump($rez);

gave me an output

给了我一个输出

string 'Hello, how are you?  __Here continues html tags, links, ' (length=56)

#5

i have searched and found this solution

我搜索并找到了这个解决方案

$txt = "
<html>
<head><title>Something wicked this way comes</title></head>
<body>
This is the interesting stuff I want to extract
</body>
</html>";

$text = preg_replace("/<([^<>]*)>/", "", $txt);

echo htmlentities($text);

#6

Some preg magic?

一些preg魔法?

$text = preg_replace('/<[\/\!]*?[^<>]*?>/si', '', $text);

#7

Maybe this will work:

也许这会奏效:

http://htmlpurifier.org/

Here is tutorial

这是教程

http://www.zendcasts.com/writing-custom-zend-filters-with-htmlpurifier/2011/06/

it's for Zend Framework but I think it may helps

它适用于Zend Framework,但我认为它可能有所帮助

#1