从xml元素值中删除换行符 [英] Remove newline from xml element value

问题描述

我有一个包含6000个元素的xml文件，例如LastName和FirstName.

I have an xml file containing 6000 element like LastName and FirstName.

我需要删除元素值内的新行.

I need to remove new line inside element value.

输入:

<info>
  <LastName>

     HOOVER

  </LastName>
</info>

输出:

<info>
  <LastName>
     HOOVER
  </LastName>
</info>

我尝试了preg_replace和str_replace的空间以及\n，\t，\r的操作，但是失败了.

I've tried preg_replace and str_replace for space and \n, \t, \r and failed.

推荐答案

由于您正在使用XML，因此还应该使用 DOM 和 DOM . w3.org/TR/xpath/"rel =" nofollow> XPath 来查找XML文档和

Since you are working with XML, you should also use one of the XML extensions PHP has to offer. The example below uses DOM and XPath to find all the text nodes in your XML document and trim them.

$xml = <<< XML
<info>

  <LastName>

     HOOVER

  </LastName>

</info>
XML;

代码:

$dom = new DOMDocument;
$dom->preserveWhiteSpace = false;
$dom->loadXml($xml);
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//text()') as $domText) {
    $domText->data = trim($domText->nodeValue);
}
$dom->formatOutput = true;
echo $dom->saveXml();

输出:

<?xml version="1.0"?>
<info>
  <LastName>HOOVER</LastName>
</info>

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