PHP DOMdocument回显问题
[英]PHP DOMdocument echoing problem
问题描述
$content = '<!--<sup><span style="font-weight:bold;color:black;">0</span></sup><br/>-->
<div class="popular-video-image">
<a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>">
<img src="/images/topvideo/1.jpg" alt=""/>
</a>
<span class="popular-video-artist ellipsis"><a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Far East Movement</a></span>
<span class="popular-video-title ellipsis"><a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Like a G6</a></span>
</div>';
$dom = new DOMDocument;
$dom->preserveWhiteSpace = false;
$dom->loadHTML($content);
foreach ($dom->getElementsByTagName('a') as $node)
{
$node->setAttribute('href', 'http://mysite.ru/' . $node->getAttribute('href'));
}
$dom->formatOutput = true;
echo $dom->saveXml($dom->documentElement);
Output: 
输出：
<html>
<body>
<div class="popular-video-image">
<a href="http://mysite.ru/video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>">
<img src="/images/topvideo/1.jpg" alt=""/></a>
<span class="popular-video-artist ellipsis"><a href="http://mysite.ru/video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Far East Movement</a></span>
<span class="popular-video-title ellipsis"><a href="http://mysite.ru/video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Like a G6</a></span>
</div>
</body>
</html>
I do not want to add html and body tags. 我不想添加html和body标签。 Also do not want to tag replaced to <lang> 同样也不想将标签替换为<lang> . 。 And is also unnecessary. 也是不必要的。
I want to receive such content, which was at the entrance, only with modified links.. 我只想在入口处收到经过修改的链接的此类内容。
Sorry for bad english! 对不起，英语不好！
4 个解决方案
解决方案1
4 2011-02-23 03:37:59
You are seeing 您正在看到 at the end of each line because your HTML has Windows-style line endings CR+LF . 在每行的末尾，因为HTML具有Windows样式的行结尾 CR+LF 。 To get rid of them, run this on it before you feed it into DOMDocument — to convert them to Unix-style line endings LF : 要摆脱它们，请在将其输入DOMDocument之前对其进行处理，以将它们转换为Unix样式的行尾LF ：
$content = preg_replace('/\r\n/', "\n", $content);
解决方案2
3 2010-11-27 13:02:19
saveXml takes an optional parameter to allow you to specify the node to output. saveXml使用可选参数，以允许您指定要输出的节点。
$dom->saveXml($dom->documentElement->firstChild->firstChild);
This will remove the html and body tags from the output. 这将从输出中删除html和body标签。
解决方案3
0 2010-11-27 12:15:40
I guess that the <html> and <body> tags get placed in because you are using loadHTML . 我猜想<html>和<body>标签被放进去是因为您正在使用loadHTML 。 Try using loadXML instead. 尝试改用loadXML 。
As for <lang> 至于<lang> , it has to be replaced because otherwise the resulting XML would not be valid. ，因此必须将其替换，因为否则生成的XML将无效。 If it is causing you problems, you should change your approach a little and work with it, not against it. 如果这导致您遇到问题，则应稍微改变一下方法并使用它，而不是反对它。
解决方案4
0 2010-11-27 13:45:30
<?php
$content = '<!--<sup><span style="font-weight:bold;color:black;">0</span></sup><br/>-->
<div class="popular-video-image">
<a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>">
<img src="/images/topvideo/1.jpg" alt=""/>
</a>
<span class="popular-video-artist ellipsis"><a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Far East Movement</a></span>
<span class="popular-video-title ellipsis"><a href="video/Far+East+Movement - Like+a+G6/w4s6H4ku6ZY/" title="<lang video_go_to=Far East Movement - Like a G6>" class="ellipsis">Like a G6</a></span>
</div>';
$dom = new DOMDocument;
$dom->preserveWhiteSpace = false;
$dom->loadHTML($content);
foreach ($dom->getElementsByTagName('a') as $node)
{
$node->setAttribute('href', 'http://mysite.ru/' . $node->getAttribute('href'));
}
$dom->formatOutput = true;
echo preg_replace('#^<!DOCTYPE.+?>#', '', str_replace( array('<html>', '</html>', '<body>', '</body>', "\n\n", '<', '>'), array('', '', '', '', '', '<', '>',), $dom->saveHTML()));
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