ZZCX_yii/backend/controllers/RunInfoController.php

<?php
namespace backend\controllers;

use yii\web\Controller;
use Yii;

class RunInfoController extends Controller
{
    public function actionGetRunInfo()
    {
        $user_id = Yii::$app->request->post('user_id','');
        $data = [
            'code'=>0,
            'info'=>$user_id
        ];
        return json_encode($data,true);
    }
}