yii框架通过http协议获取地址栏中的内容

//创建一个控制器
<?php
namespace frontendcontrollers;
use frontendmodelshuce;
use Yii;
use yiiwebController;

use frontendmodelsContactForm;
class LoginController extends Controller
{
    //周考2
    public function actionNn(){
        $model = new Zhuce();
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
            $aa=Yii::$app->request->post();
            $data=$aa['Zhuce'];
            $data['rand']=rand(1111,9999);
            $data['time']=time();
            ksort($data);
            //把数组变成地址栏的数据
            $par=http_build_query($data);
            $str = md5($par);
            $secret='123456';
            $sign=md5($str.$secret);
            //发送服务器端  curl
            // 创建一个新cURL资源
            $ch = curl_init();
            $header = [
                'sign:'.$sign,
            ];
            curl_setopt($ch, CURLOPT_URL, "http://127.0.0.1/month10/api.php?".$par);
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
         //   curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
            $init_last=curl_exec($ch);
            var_dump($init_last);

        } else {
            // 无论是初始化显示还是数据验证错误
            return $this->render('login', ['model' => $model]);
        }
    }
}

//创建一个api.php
<?php
/*var_dump($_GET);die;
var_dump($_SERVER);*/
$secret='123456';
$data['name']=$_GET['name'];
//var_dump($data['name']);die;
$data['pwd']=$_GET['pwd'];
$data['time']=$_GET['time'];
$data['rand']=$_GET['rand'];
$sign = $_SERVER['HTTP_SIGN'];
ksort($data);
$params = http_build_query($data);
$str=md5($params);
$newsign=md5($str.$secret);
if($sign === $newsign)
{
    //入库

}
else
{
    $arr=['status'=>500,'msg'=>'error'];
}
echo json_encode($arr);