php:每当我尝试编写UTF-8时都使用DomDocument，它会以十六进制表示 [英] php: using DomDocument whenever I try to write UTF-8 it writes the hexadecimal notation of it

问题描述

当我尝试使用DomDocument将UTF-8字符串写入XML文件时，它实际上会写入字符串的十六进制表示法，而不是字符串本身.

When I try to write UTF-8 Strings into an XML file using DomDocument it actually writes the hexadecimal notation of the string instead of the string itself.

例如:

ירושלים

代替:ירושלים

有什么想法可以解决该问题吗?

any ideas how to resolve the issue?

推荐答案

好，到这里:

$dom = new DOMDocument('1.0', 'utf-8');
$dom->appendChild($dom->createElement('root'));
$dom->documentElement->appendChild(new DOMText('ירושלים'));
echo $dom->saveXml();

可以正常工作，因为在这种情况下，您构造的文档将保留指定为第二个参数的编码:

will work fine, because in this case, the document you constructed will retain the encoding specified as the second argument:

<?xml version="1.0" encoding="utf-8"?>
<root>ירושלים</root>

但是，一旦将XML加载到未指定编码的文档中，您将丢失在构造函数中声明的所有内容，这意味着:

However, once you load XML into a Document that does not specify an encoding, you will lose anything you declared in the constructor, which means:

$dom = new DOMDocument('1.0', 'utf-8');
$dom->loadXml('<root/>'); // missing prolog
$dom->documentElement->appendChild(new DOMText('ירושלים'));
echo $dom->saveXml();

不会使用utf-8编码:

will not have an encoding of utf-8:

<?xml version="1.0"?>
<root>&#x5D9;&#x5E8;&#x5D5;&#x5E9;&#x5DC;&#x5D9;&#x5DD;</root>

因此，如果您加载XML，请确保它是

So if you loadXML something, make sure it is

$dom = new DOMDocument();
$dom->loadXml('<?xml version="1.0" encoding="utf-8"?><root/>');
$dom->documentElement->appendChild(new DOMText('ירושלים'));
echo $dom->saveXml();

，它将按预期工作.

或者，您也可以指定编码加载文档后.

As an alternative, you can also specify the encoding after loading the document.

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