食用方法
<?php
header('Content-type: application/json');
$api = xml('域名/sitemap.xml');
echo json_encode($api,JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE);
//xml转JSON
function xml($url){
$api = file_get_contents($url);
$xml=simplexml_load_string($api,'SimpleXMLElement',LIBXML_NOCDATA);
$json = json_encode($xml,JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE);
$data = json_decode($json,true);
return $data;
}