PHP 函数在 XML 处理中的应用

$xml = <<<XML
<root>
  <item>One</item>
  <item>Two</item>
</root>
XML;

$sxml = simplexml_load_string($xml);

$sxml = simplexml_load_file('path/to/file.xml');

foreach ($sxml->children() as $child) {
  echo $child->getName() . ': ' . $child->asXML() . "\n";
}

$nodes = $sxml->xpath('/root/item');
foreach ($nodes as $node) {
  echo $node->asXML() . "\n";
}

$sxml->addChild('new_item', 'New Item');

$sxml->addChild('description')->addCData('This is a description.');

$sxml->attributes()->id = '1';

$xml = $sxml->saveXML();

$xml = $sxml->asXML();

$xml = simplexml_load_string(file_get_contents('https://example.com/rss.xml'));

foreach ($xml->channel->item as $item) {