在 php 中创建 xml 时删除 xml 版本标记
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5947695/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
remove xml version tag when a xml is created in php
提问by Dhiraj
I'm creating a xml using this
我正在使用这个创建一个 xml
$customXML = new SimpleXMLElement('<abc></abc>');
after adding some attributes onto this, when I try to print it it appears like this,
在上面添加一些属性后，当我尝试打印它时，它看起来像这样，
<?xml version="1.0"?>
<abc id="332"><params><param name="aa">33</param></params></abc>
Is there a way to remove the xml version node ? Thank you
有没有办法删除xml版本节点？谢谢
回答by Gordon
In theory you can provide the LIBXML_NOXMLDECLoptionto drop the XML declaration when saving a document, but this is only available in Libxml >= 2.6.21 (and buggy). An alternative would be to use
理论上，您可以提供在保存文档时删除 XML 声明的LIBXML_NOXMLDECL选项，但这仅在 Libxml >= 2.6.21（和buggy）中可用。另一种方法是使用
$customXML = new SimpleXMLElement('<abc></abc>');
$dom = dom_import_simplexml($customXML);
echo $dom->ownerDocument->saveXML($dom->ownerDocument->documentElement);
回答by Jon
A practical solution: you know that the first occurrence of ?>in the result string is going to be then end of the xml version substring. So:
一个实用的解决方案：您知道?>结果字符串中的第一次出现将是 xml 版本子字符串的结尾。所以：
$customXML = new SimpleXMLElement('<abc></abc>');
$customXML = substr($customXML, strpos($customXML, '?'.'>') + 2);
Note that ?>is split into two parts because otherwise some poor syntax highlighter may have problems parsing at this point.
请注意，?>它分为两部分，否则一些糟糕的语法荧光笔此时可能会出现解析问题。
回答by hrvoj3e
I have a simmilar solution to the accepted answer:
我对接受的答案有一个类似的解决方案：
If you have xml allready loaded in a variable:
如果您已经在变量中加载了 xml：
$t_xml = new DOMDocument();
$t_xml->loadXML($xml_as_string);
$xml_out = $t_xml->saveXML($t_xml->documentElement);
For XML file from disk:
对于来自磁盘的 XML 文件：
$t_xml = new DOMDocument();
$t_xml->load($file_path_to_xml);
$xml_out = $t_xml->saveXML($t_xml->documentElement);
This comment helped: http://www.php.net/manual/en/domdocument.savexml.php#88525
此评论有帮助：http: //www.php.net/manual/en/domdocument.savexml.php#88525
回答by hakre
As SimpleXMLElementalways uses "\n"to separate the XML-Declaration from the rest of the document, it can be split at that position and the remainder taken:
由于SimpleXMLElement始终使用"\n"的XML-宣言从文档的其余部分分开，它可以在该位置拆分，而其余采取：
explode("\n", $customXML->asXML(), 2)[1];
Example:
例子：
<?php
$customXML = new SimpleXMLElement('<!-- some comment -->
<abc>
</abc>');
echo explode("\n", $customXML->asXML(), 2)[1];
Output:
输出：
<!-- some comment -->
<abc>
</abc>
回答by Soliman
Try:
尝试：
$xmlString = $doc->saveXML();
$xmlString = str_replace("<?xml version=\"1.0\"?>\n", '', $xmlString);
file_put_contents($filename, $xmlString);
回答by Hitman_99
There's another way without the replacing xml header. I prefer this:
还有另一种没有替换 xml 标头的方法。我更喜欢这个：
$xml = new xmlWriter();
$xml->openMemory();
$xml->startElement('abc');
$xml->writeAttribute('id', 332);
$xml->startElement('params');
$xml->startElement('param');
$xml->writeAttribute('name', 'aa');
$xml->text('33');
$xml->endElement();
$xml->endElement();
echo $xml->outputMemory(true);
Gives output:
给出输出：
<abc id="332"><params><param name="aa">33</param></params></abc>
回答by CubFuzzy
echo preg_replace("/<\?xml.*\?>/",'',$doc->saveXML(),1);
回答by Wahid Masud
$customXML = new SimpleXMLElement('<source><abc>hello</abc></source>');
$result = $customXML->xpath('//abc');
$result = $result[0];
var_dump($result->asXML());
回答by pintxo
If this is a problem, this should do it:
如果这是一个问题，应该这样做：
$xml = str_replace(' version="1.0"', '', $xml);`
回答by Jahmic
XML header tags and PHP short tags are incompatible. So, this may be an issue of using the short tags in PHP (i.e. <?=instead of <?php echo...). So, turning off short tags in PHP.INI (and updating your code appropriately) may resolve this issue.
XML 标头标签和 PHP 短标签不兼容。因此，这可能是在 PHP 中使用短标签（即<?=代替<?php echo...）的问题。因此，关闭 PHP.INI 中的短标签（并适当更新您的代码）可能会解决此问题。
