为什么PHP DOMDocument loadHTML不适用于波斯字符？ [英] Why PHP DOMDocument loadHTML doesn't work for Persian characters?

问题描述

<?php

$data = <<<DATA
<div>
    <p>سلام</p>                                         // focus on this line
    <p class="myclass">Remove this one</p>
    <p>But keep this</p>
    <div style="color: red">and this</div>
    <div style="color: red">and <p>also</p> this</div>
    <div style="color: red">and this <div style="color: red">too</div></div>
</div>
DATA;

$dom = new DOMDocument();
$dom->loadHTML(mb_convert_encoding($data, 'HTML-ENTITIES', 'UTF-8'), LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($dom);

foreach ($xpath->query("//*[@*]") as $node) {
    $parent = $node->parentNode;
    while ($node->hasChildNodes()) {
        $parent->insertBefore($node->lastChild, $node->nextSibling);
    }
    $parent->removeChild($node);
}

echo $dom->saveHTML();

正如我在问题标题中提到的那样，我网站的内容是波斯语（不是英语） ）。但是有关波斯语字符的代码不起作用。

As I've mentioned in the title of my question, the content of my website is Persian (not English). But code about doesn't work for Persian characters.

当前输出：

.
.
    <p>&#1587;&#1604;&#1575;&#1605;</p>
.
.

预期输出：

.
.
    <p>سلام</p>
.
.

它有什么问题，我该如何解决？

What's wrong with it and how can I fix it?

注意：另外，如您所见，我已经使用 mb_convert_encoding（$ data，'HTML-ENTITIES'，'UTF-8'）使其正确（基于此答案）

Note: Also as you see I've used mb_convert_encoding($data, 'HTML-ENTITIES', 'UTF-8') to make it correct (based on this answer) but still it doesn't work.

推荐答案

波斯语字符被编码为数字字符引用。它们将适当地显示在浏览器中，或者您可以使用 html_entity_decode（）对其进行解码，例如：

The Persian characters are being encoded as numeric character references. They'll appear appropriately in a browser or you can see the original by decoding them with html_entity_decode(), e.g.:

echo html_entity_decode("سلام");

输出：

سلام

---

如果您喜欢输出中的原始字符而不是数字字符引用，您可以更改：

---

If you prefer the original characters in the output rather than numeric character references, you can change:

echo $dom->saveHTML();

至：

echo $dom->saveHTML($dom->documentElement);

这会稍微改变序列化，结果是：

This alters the serialization a bit and the result is:

<div>
    <p>سلام</p>
    Remove this one
    <p>But keep this</p>
    and this
    and <p>also</p> this
    and this too
</div>

例如。

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