php语法怎么将访问的XML文件直接转换成数组格式

如何利用php语法将访问的XML文件直接转换成数组格式，下面编程教程网小编给大家简单介绍一下具体实现代码！

$xmlObj = simplexml_load_file("city.xml");
$cityArray = array();
foreach ($xmlObj->channel->item as $item) {
  $titleArray = explode(" / ", $item->title);
  $city = $titleArray[0];
  $temp = substr($titleArray[1], 0, 2);
  $cityArray[$city] = array("temperature" => $temp);
}
foreach ($cityArray as $city => $data) {
  echo "$city 的温度为：{$data['temperature']}度。";
}