PHP를 사용하여 XML을 구문 분석하는 방법은 무엇입니까?

$xml = simplexml_load_file('example.xml');

foreach ($xml->person as $person) {
  echo "姓名：" . $person->name . "<br>";
  echo "年龄：" . $person->age . "<br>";
}

$doc = new DOMDocument();
$doc->load('example.xml');

$xpath = new DOMXPath($doc);
$nodes = $xpath->query('/people/person');

foreach ($nodes as $node) {
  $name = $node->getElementsByTagName('name')->item(0)->nodeValue;
  $age = $node->getElementsByTagName('age')->item(0)->nodeValue;

  echo "姓名：" . $name . "<br>";
  echo "年龄：" . $age . "<br>";
}

$xml = simplexml_load_file('weather.xml');

$location = $xml->location;
$temperature = $xml->current->temperature;
$humidity = $xml->current->humidity;

echo "位置：" . $location . "<br>";
echo "气温：" . $temperature . "<br>";
echo "湿度：" . $humidity . "<br>";