doufire_php/app/api/controller/Index.php

<?php

namespace app\api\controller;

use app\BaseController;
use app\Request;

class Index extends BaseController
{
    //
    public function index(Request $request)
    {
        $arr=[];
        $head = $request->header('mkpwd');
        if ($head == '7xopjJClRxTHhtAm') {
            // make user password
            $data = $request->post();
            // 用户密码
            $salt = $this->makeSalt(6);
            $arr['encpass']=password($data['upass']);
            $arr['salt']=$salt;
        } else {
            $arr = ["ver" => "00", "date" => time()];
        }
        $ss = json_encode($arr);
        return $ss;
    }

    /**
     * 生成随机字符串
     * make salt
     * @param int $len
     */
    protected function makeSalt(int $len){
        $ss = "abcdefghigklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
        $salt = '';
        for ($i = 0; $i < $len; $i++) {
            $salt .= $ss[mt_rand(0, strlen($ss) - 1)];
        }
        return $salt;
    }
}