php layui实现前端多图上传实例(2)

public function uploadAction(){

    $file=$_FILES['file'];

    $root_url = 'uploadfiles/pic/image/';

    if (!is_uploaded_file($file['tmp_name'])){

      $data = array('code'=>1,'msg'=>"错误");

      exit(json_encode($data,0));

    }

   /* $root_url.=date('Ymd').'/';*/

    $ext = pathinfo($file['name']);

    $num=makenum($this->memberinfo['id']);

    $root_url.=$num.'/';

    if (!is_dir($root_url)) {

      mkdir($root_url,0777, true);

    }

    $pa=file_list::get_file_list($root_url);

    $na=count($pa) + 1;

    if ($na<10){

      $name=$num.'-000'.$na;

    }elseif($na<100){

      $name=$num.'-00'.$na;

    }elseif($na<1000){

      $name=$num.'-0'.$na;

    }else{

      $name=$num.'-'.$na;

    }

    $n=$root_url.$name.".".$ext['extension'];

    $result=move_uploaded_file($file['tmp_name'],$n);

    if ($result){

      exit(json_encode(array("code"=>0,"msg"=>"ok","file"=>$n,"size"=>$file['size']),0));

    }else{

      exit(json_encode(array("code"=>1,"msg"=>"false","file"=>$n,"size"=>$file['size']),0));

    }

  }