如何强制XPath使用UTF8?

I have an XHTML document being passed to a PHP app via Greasemonkey AJAX. The PHP app uses UTF8. If I output the POST content straight back to a textarea in the AJAX receiving div, everything is still properly encoded in UTF8.

我有一个XHTML文档通过Greasemonkey AJAX传递给PHP应用程序。PHP应用程序使用UTF8。如果我直接将POST内容输出到AJAX接收div中的textarea，那么所有内容仍然是用UTF8正确编码的。

When I try to parse using XPath

当我尝试使用XPath进行解析时

$dom = new DOMDocument();
$dom->loadHTML($raw2);
$xpath = new DOMXPath($dom);
$query = '//td/text()';
$nodes = $xpath->query($query);
foreach($nodes as $node) {
  var_dump($node->wholeText);
}

dumped strings are not utf8. How do I force DOM/XPath to use UTF8?

被转储的字符串不是utf8。如何强制DOM/XPath使用UTF8?

5 个解决方案

#1

If it is a fully fledged valid xhtml document you shouldn't use loadhtml() but load()/loadxml().

如果它是一个功能齐全的有效xhtml文档，那么不应该使用loadhtml()，而应该使用load()/loadxml()。

Given the example xhtml document

以xhtml文档为例

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    <head>
        <title>xhtml test</title>
    </head>
    <body>
        <h1>A Table</h1>
        <table>
            <tr><th>A</th><th>O</th><th>U</th></tr>
            <tr><td>Ä</td><td>Ö</td><td>Ü</td></tr>
            <tr><td>ä</td><td>ö</td><td>ü</td></tr>
        </table>
    </body>
</html>

the script

这个脚本

<?php
$raw2 = 'test.html';

$dom = new DOMDocument();
$dom->load($raw2);
$xpath = new DOMXPath($dom);
var_dump($xpath->registerNamespace('h', 'http://www.w3.org/1999/xhtml'));
$query = '//h:td/text()';
$nodes = $xpath->query($query);
foreach($nodes as $node) {
    foo($node->wholeText);
}


function foo($s) {
    for($i=0; $i<strlen($s); $i++) {
        printf('%02X ', ord($s[$i]));
    }
    echo "\n";
}

prints

打印

bool(true)
C3 84 
C3 96 
C3 9C 
C3 A4 
C3 B6 
C3 BC

i.e. the output/strings are utf-8 encoded

即输出/字符串是utf-8编码的

#2

I had the same problem and I couldn't use tidy in my webserver. I found this solution and it worked fine:

我有同样的问题，我不能在我的webserver中使用tidy。我找到了这个解决方案，效果很好:

$html = mb_convert_encoding($html, 'HTML-ENTITIES', "UTF-8");
$dom = new DomDocument();
$dom->loadHTML($html);

#3

I have not tried, but the second parameter of DOMDocument::__construct seems to be related to the encoding ; maybe that'll help you :-)

我没有尝试过，但是DOMDocument的第二个参数::__construct似乎与编码有关;也许这对你有帮助。

Else, there is an encoding property in DOMDocument, which is writable.

否则，DOMDocument中有一个可写的编码属性。

The DOMXpath beeing constructed with the DOMDocument as parameter, maybe it'll work...

用DOMDocument作为参数构造的DOMXpath治理，可能会有用……

#4

A bit late in the game, but perhaps it helps someone...

游戏进行得有点晚了，但它可能会帮助某人……

The problem might be in the output, and not in the dom/xpath object itself.

问题可能出现在输出中，而不是dom/xpath对象本身。

If you would output the nodeValue directly, you would get corrupted characters e.g.:

如果你直接输出nodeValue，你会得到被损坏的字符，例如:

Ã¬ÂÂÃ¬ÂÂ Ã«Â¹ÂÃ«Â”Â”Ã¬ÂÂ¤
ìì ë¹ë””ì¤ í°ì  íì¤

You have to load your dom object with the second param "utf-8", new \DomDocument('1.0', 'utf-8'), but still when you print the dom node list/element value you get broken characters:

您必须使用第二个参数“utf-8”、新的\DomDocument('1.0'、'utf-8')加载dom对象，但是当您打印dom节点列表/元素值时，您仍然会得到损坏的字符:

echo $contentItem->item($index)->nodeValue

echo $ contentItem - >项目(美元指数)- > nodeValue

you have to wrap it up with utf8_decode:

你必须用utf8_decode这个词来结束它:

echo utf8_decode($contentItem->item($index)->nodeValue) //output: 者不終朝而會，愚者可浹旬而學

回声utf8_decode($ contentItem - >项(美元指数)- > nodeValue)/ /输出:者不終朝而會,愚者可浹旬而學

#5

Struggled with similar problem (unable to force Xpath to use UTF-8 in combination with loadHTML), in the end this excellent article provided the solution: http://devzone.zend.com/article/8855

遇到类似的问题(无法强制Xpath与loadHTML一起使用UTF-8)，最后这篇优秀的文章提供了解决方案:http://devzone.zend.com/article/8855。

workaround:

处理:

Insert an additional section with the appropriate Content-type HTTP-EQUIV meta tag immediately following the opening tag.

在打开标签后立即插入一个附加部分，其中包含适当的Content-type HTTP-EQUIV元标记。

#1