tp51上传文件,使用默认的文件名称

ThinkPHP5.1图片上传后自定义图片名称和图片存储路径

 $sjs = zf_rand_str(5);
 $info = $file->validate(['ext'=>ZFC("webconfig.file_ext")])->move('.'.$this->site_path.'upload/common/filesystem/fp/'.$sjs,$file->getInfo()['name']);
 $getSaveName = str_replace('\\', '/', $info->getSaveName());
 $url = (isHTTPS()?'https':'http').'://'.request()->host().$this->site_path.'upload/common/filesystem/fp/'.$sjs.'/'.$getSaveName;

$arr = $file->getInfo(); // 文件名称
$ext = strrchr（$arr['name'], "."); //扩展名，带"."
$filename = date("ymd") .rand(100,999). "" . $ext;//根据年月日和随机数生成新的图片名称               

$info = $file->move('../uploads/'.date("Y"), $savename = $filename, $replace = false);//保存到指定文件夹