TP5发送短信限制

<?php
//发送手机验证码
function smsCode()
{
    //dump($this->request->post());
    //请求方式验证
    /*if (!$this->request->isAjax()) {
    $this->error('请求异常');
    }*/
    $mobile = $this->request->post('data.mobile');
    //dump($mobile);die;
    $pattern = "/^1[3456789]{1}\d{9}$/";
    //手机号不能为空
    if (empty($mobile) || !preg_match($pattern, $mobile)) {
        $this->error('请输入正确的手机号');
    }
    $lastSendtime = Db::name('mscode')->where('mobile', $mobile)->order('id desc')->value('sendtime');
    //1分钟只能发一次
    if ($lastSendtime && time() - $lastSendtime < 60) {
        $this->error('发送过于频繁');
    }
    $where = [];
    $where['sendtime'] = ['gt', strtotime(date('Y-m-d'))];
    $send_sum = $sendResult = Db::name('mscode')->where($where)->count();
    //一天内平台只能发送300条短信
    if ($send_sum > 300) {
        $this->error('请稍后重试。。。');
    }
    $where['mobile'] = $mobile;
    $sendResult = Db::name('mscode')->where($where)->count();
    //同一手机一天只能发送5条短信
    if ($sendResult >= 5) {
        $this->error('短信超过限制');
    }
    $ip = $this->request->ip();
    //需要引入think\Cache类,也可以存数据库;
    if (cache($ip)) {
        Cache::inc($ip);
    } else {
        cache($ip, 1, 86400);
    }
    //同一ip一天只能发送30条短信
    if (cache($ip) && cache($ip) > 30) {
        $this->error('短信超过限制');
    }
    //存入数据库记录
    $code = rand(111111, 999999);
    $data['mobile'] = $mobile;
    $data['code'] = $code;
    $data['sendtime'] = time();
    $data['state'] = 0;
    $data['endtime'] = time() + 600;
    $sendResult = Db::name('mscode')->insert($data);
    if ($sendResult) {
        //调用短信发送接口
        $result = (new Duanxin())->duanx($mobile, $code);
        if ($result['status'] == 1) {
            $this->success('发送成功');
        }
    }
    $this->error('发送失败');
}

/**
 * 手机验证码验证
 * @param $mobile
 * @param $code
 * @return array
 */
function checkCode($mobile, $code)
{
    $mscode = Db::name('mscode');
    $rs = array();
    //获得最新短信验证码
    $codeInfo = $mscode->where(array('mobile' => $mobile))->order('id desc')->find();
    if ($codeInfo['code'] != $code) {
        $rs['state'] = 0;
        $rs['msg'] = '短信验证码有误';
        return $rs;
    }
    //判断是否过期
    if ($codeInfo['endtime'] < time()) {
        $rs['state'] = 0;
        $rs['msg'] = '短信验证码已过期';
        return $rs;
    }
    //成功返回
    $rs['state'] = 1;
    return $rs;
}