如何从php中的字符串中删除特定的html标签及其内容

Question

I have some string values like this example,我有一些像这个例子这样的字符串值，

1) '7-6 ⁶ , 7-6 ⁵ ' 2) '6 ¹⁰ -7, 6-0, 6-2' 1) '7-6 ⁶ , 7-6 ⁵ ' 2) '6 ¹⁰ -7, 6-0, 6-2'

I want below output, 1) '7-6, 7-6' 2) '6-7, 6-0, 6-2'我想要下面的输出，1) '7-6, 7-6' 2) '6-7, 6-0, 6-2'

I have written below php code which is not working properly,我在下面写了无法正常工作的 php 代码，

$score = '7-6<sup>6</sup>, 7-6<sup>5</sup>';
// $score ='6<sup>10</sup>-7, 6-0, 6-2';

while(strpos($score, '<sup>') !== false) {

    $tag_start  = strpos($score, '<sup>');

    $tag_end = strpos($score, '</sup>') + 5;

    $sub_str = substr($score, $tag_start, $tag_end);

    $score = str_replace($sub_str, '', $score);
    $score = str_replace(' ', '', $score);
}

echo $score;

Answer 1

One reliable way to do that, is to use a XML parser and its methods, eg SimpleXML .一种可靠的方法是使用XML 解析器及其方法，例如SimpleXML 。 The advantage over string replacing with fixed string lengths ( strpos(…) + 5 ) or using regular expressions, is that you really can find all occurrences of a specified element, even if it bears attributes.与使用固定字符串长度（ strpos(…) + 5 ）或使用正则表达式替换字符串相比的优势在于，您确实可以找到指定元素的所有出现，即使它带有属性。

<?php

$score = '7-6<sup>6</sup>, 7-6<sup>5</sup>, 6<sup>10</sup>-7, 6-0, 6-2';

/* Add a temporary wrapper element, so that any string input may be parsed as valid XML */
$xml = new SimpleXMLElement(sprintf('<html>%s</html>', $score));

/* Find the elements to be deleted using XPATH */
foreach ($xml->xpath('sup') as $sup) {
    /* Remove this node using unset() */
    unset($sup[0]);
}

/* Remove the temporary wrapper and the XML header, which is printed by asXML() */
$xmlOutput = trim(str_replace(['<?xml version="1.0"?>', '<html>', '</html>'], '', $xml->asXML()));

var_dump($xmlOutput);

See also https://en.wikipedia.org/wiki/XPath另见https://en.wikipedia.org/wiki/XPath

Another option would be to use strip_tags() and list all allowed tags in the second attribute.另一种选择是使用strip_tags()并在第二个属性中列出所有允许的标签。

如何从php中的字符串中删除特定的html标签及其内容

问题描述

1 个解决方案

解决方案1
1 已采纳 2018-09-14 15:17:00

如何从php中的字符串中删除特定的html标签及其内容

问题描述

1 个解决方案

解决方案1 1 已采纳 2018-09-14 15:17:00

解决方案1
1 已采纳 2018-09-14 15:17:00