PHP - 简单 XML - 嵌套层次结构 [英] PHP - Simple XML - Nested Hierarchy
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问题描述
我一直在使用 PHP 的简单 XML 函数来处理 XML 文件.
I have been using PHP's simple XML function to work with an XML file.
以下代码适用于简单的 XML 层次结构:
The below code works fine for a simple XML hierarchy:
$xml = simplexml_load_file("test.xml");
echo $xml->getName() . "<br />";
foreach($xml->children() as $child)
{
echo $child->getName() . ": " . $child . "<br />";
}
这里假设 XML 文档的结构如下:
This assumes the structure of the XML document is as follows:
<?xml version="1.0" encoding="ISO-8859-1"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
但是，如果我的 XML 文档中有更复杂的结构 - 内容根本不会输出.下面显示了一个更复杂的 XML 示例:
However, if I had a more complex structure within my XML document - the contents simply is not output. A more complex XML example is shown below:
<note>
<noteproperties>
<notetype>
TEST
</notetype>
</noteproperties>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
我需要处理深度不确定的 XML 文件 - 谁能建议一种方法?
I need to process XML files that have an indefinite depth - can anyone suggest a method?
推荐答案
那是因为你需要在
看看这个，来自SimpleXMLElement::children的例子:
Check this out, example from SimpleXMLElement::children:
$xml = new SimpleXMLElement(
'<person>
<child role="son">
<child role="daughter"/>
</child>
<child role="daughter">
<child role="son">
<child role="son"/>
</child>
</child>
</person>');
foreach ($xml->children() as $second_gen) {
echo ' The person begot a ' . $second_gen['role'];
foreach ($second_gen->children() as $third_gen) {
echo ' who begot a ' . $third_gen['role'] . ';';
foreach ($third_gen->children() as $fourth_gen) {
echo ' and that ' . $third_gen['role'] .
' begot a ' . $fourth_gen['role'];
}
}
}
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