Question

我有一个这种格式的XML文件

 "note.xml"
      <currencies>
     <currency name="US dollar" code_alpha="USD" code_numeric="840" />
         <currency name="Euro" code_alpha="EUR" code_numeric="978" />

      </currencies>

PHP代码

$xml=simplexml_load_file("note.xml");

echo $xml->name. "<br>";             --no output
echo $xml->code_alpha. "<br>";        --no output
echo $xml->code_numeric . "<br>";        --no output

     print_r($xml);

print_r（$ xml）的输出 - ＆gt; SimpleXMLElement对象（[货币] =＆gt; SimpleXMLElement对象（[@属性] =＆gt;数组（[名称] =＆gt;美元[code_alpha] =＆gt; USD [code_numeric] =＆gt; 840））

我没有获得ECHO声明的任何输出我试过'simplexml_load_file'并尝试从中读取但它不起作用。请告诉我应该用什么PHP代码来读取这种格式的XML文件。

Answer 1

使用DomDocument：

<?php
$str = <<<XML
<currencies>
    <currency name="US dollar" code_alpha="USD" code_numeric="840" />
    <currency name="Euro" code_alpha="EUR" code_numeric="978" />
</currencies>
XML;

$dom = new DOMDocument();
$dom->loadXML($str);

foreach($dom->getElementsByTagName('currency') as $currency)
{
    echo $currency->getAttribute('name'), "\n";
    echo $currency->getAttribute('code_alpha'), "\n";
    echo $currency->getAttribute('code_numeric'), "\n";
    echo "+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\n";
}
?>

Live DEMO.

使用simplexml：

<?php
$str = <<<XML
<currencies>
    <currency name="US dollar" code_alpha="USD" code_numeric="840" />
    <currency name="Euro" code_alpha="EUR" code_numeric="978" />
</currencies>
XML;


$currencies = new SimpleXMLElement($str);
foreach($currencies as $currency)
{
    echo $currency['name'], "\n";
    echo $currency['code_alpha'], "\n";
    echo $currency['code_numeric'], "\n";
    echo "+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\n";
}
?>

<强> Live DEMO.

Answer 2

您可以使用DomDocument来实现此目标。

查看此帖http://www.developersnote.com/2013/12/how-to-read-xml-file-in-php.html

$objDOM = new DOMDocument();

//Load xml file into DOMDocument variable
$objDOM->load("../configuration.xml");

//Find Tag element "config" and return the element to variable $node
$node = $objDOM->getElementsByTagName("config");

//looping if tag config have more than one
foreach ($node as $searchNode) {
    $dbHost = $searchNode->getAttribute('host');
    $dbUser = $searchNode->getAttribute('userdb');
    $dbPass = $searchNode->getAttribute('dbpass');
    $dbDatabase = $searchNode->getAttribute('database');
}

用php读取xml文件

2 个答案: