1. 读取POST 中的xml内容
$post_str = file_get_contents('php://input');
// 解析 XML 内容
$post_obj = simplexml_load_string($post_str, 'SimpleXMLElement', LIBXML_NOCDATA);
$from_username = $post_obj->FromUserName;
$to_username = $post_obj->ToUserName;
$post_str = file_get_contents('php://input');
// 解析 XML 内容
$post_obj = simplexml_load_string($post_str, 'SimpleXMLElement', LIBXML_NOCDATA);
$from_username = $post_obj->FromUserName;
$to_username = $post_obj->ToUserName;