在你的 $ http->获取电话，您将 $ xml_string 作为参数传递。您应该能够在服务器函数中接收该函数，只需更改声明如下：

In your $http->get call, you're passing the $xml_string as a parameter. You should be able to receive that in your server function simply by changing the declaration as follows:

public function server($xml_string) {

请注意，可能存在URL编码这里要考虑的问题;我从来没有使用过这种设置。

Note that there may be URL encoding issues to consider here; I've never worked with this sort of setup.