PHP Laravel 上传图片、文件等类封装

$upload = new UploadClass(); 
$upload->exts=array('jpg','png'); 
$upload->maxSize=5*1024*1024; 
$upload->savePath='course/uid_6'; 
$file = $request->file('fileImg'); 
$aa = $upload->upload($file); 
dd($aa);