tp6 中间件

function limitoftimes($numberoftimes=10,$timespant="oneday",$verification=false){
    $cacheneme = request()->url().$numberoftimes;
    $nowtimes = cache($cacheneme);//获取缓存中的当前次数
    if($nowtimes>=$numberoftimes) return false;
    if($verification)return true;
    if($timespant==="oneday"){
        $expires_in = strtotime(date('Y-m-d',strtotime('+1 day'))) - time();
    }else{
        $expires_inname = $cacheneme."-".$timespant;//设置时间缓存名称
        $expires_intime = cache($expires_inname);
        if($expires_intime){
            $expires_in = $timespant-(request()->time() - $expires_intime);
        }else{
            $expires_in = $timespant;
            cache($expires_inname,request()->time(),$expires_in);
        }
    }
    $nowtimes = $nowtimes+1;//不可用++ 因为有false的情况
    cache($cacheneme,$nowtimes,$expires_in);
    return $numberoftimes-$nowtimes;
}
/**
 * 处理请求
 *
 * @param \think\Request $request
 * @param \Closure       $next
 * @return
 */
public function handle($request, \Closure $next)
{
    $Api=$this->limitoftimes(20,60);
    if($Api===false){
        echo '检测到您存在恶意请求行为，屏蔽一分钟';die;
    }
    return $next($request);
}