如何避免DOM解析添加html doctype，< head>和< body>标签? [英] How to avoid DOM parsing adding html doctype, <head> and <body> tags?
问题描述
<?
$string = '
Some photos<br>
<span class="naslov_slike">photo_by_ile_IMG_1676-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1699-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1697-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1695-01</span><br />
';
$dom = new DOMDocument();
$dom->loadHTML($string);
$dom->preserveWhiteSpace = false;
$elements = $dom->getElementsByTagName('span');
$spans = array();
foreach($elements as $span) {
$spans[] = $span;
}
foreach($spans as $span) {
$span->parentNode->removeChild($span);
}
echo $dom->saveHTML();
?>
我正在使用此代码来解析字符串.当此函数返回string时，它会添加一些标签:
I'm using this code to parse strings. When string is returned by this function, it has some added tags:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p>Some photos<br><br><br><br><br></p></body></html>
有什么办法可以避免这种情况并返回干净的字符串?例如，此输入字符串仅在使用中可以是任何html字符串.
Is there any way to avoid this and to have clean string returned? This input string is just for example, in usage it can be any html string.
推荐答案
我实际上正在寻找相同的解决方案.我一直在使用以下方法来执行此操作，但是在执行 loadHTML()时，仍将在文本节点周围添加< p> .我没有没有不使用其他解析器的方法来解决这个问题，或者有一些隐藏的标志告诉它不要这样做.
I'm actually looking for the same solution. I've been using the following method to do this, however the <p> around the text node will still be added when you do loadHTML(). I don't there's a way to get around that without using another parser, or there's some hidden flag to tell it to not do that.
此代码:
<?php
function innerHTML($node){
$doc = new DOMDocument();
foreach ($node->childNodes as $child)
$doc->appendChild($doc->importNode($child, true));
return $doc->saveHTML();
}
$string = '
Some photos<br>
<span class="naslov_slike">photo_by_ile_IMG_1676-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1699-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1697-01</span><br />
<span class="naslov_slike">photo_by_ile_IMG_1695-01</span><br />
';
$dom = new DOMDocument();
$dom->preserveWhiteSpace = false;
$dom->loadHTML($string);
$elements = $dom->getElementsByTagName('span');
$spans = array();
foreach($elements as $span) {
$spans[] = $span;
}
foreach($spans as $span) {
$span->parentNode->removeChild($span);
}
echo innerHTML( $dom->documentElement->firstChild );
将输出:
<p>Some photos<br><br><br><br><br></p>
但是，此解决方案当然不能使标记保持100％完整，但是已经很接近了.
However of course this solution does not keep the markup 100% intact, but it's close.
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