MacOS上的Swift -如何将响应从PHP post函数保存到全局变量

var globalResponse: String?

func sendPostRequest() {
    let url = URL(string: "http://example.com/post")!
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    
    // 设置POST请求的参数
    let postString = "key1=value1&key2=value2"
    request.httpBody = postString.data(using: .utf8)
    
    let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
        guard let data = data, error == nil else {
            print("请求出错: \(error?.localizedDescription ?? "未知错误")")
            return
        }
        
        if let httpResponse = response as? HTTPURLResponse {
            if httpResponse.statusCode == 200 {
                // 将响应保存到全局变量
                globalResponse = String(data: data, encoding: .utf8)
                print("响应保存成功: \(globalResponse ?? "")")
            } else {
                print("请求失败，状态码: \(httpResponse.statusCode)")
            }
        }
    }
    
    task.resume()
}

sendPostRequest()

print("全局响应数据: \(globalResponse ?? "")")