PHP Laravel 上传图片、文件等类封装

<?php 
/ 
  Created by PhpStorm. 
  User: wady .bcty365. 
  Date: 2017/8/16 
  Time: 14:52 
 / 
namespace App\ThinkClass; 
use Symfony\Component\HttpFoundation\File\UploadedFile; 
class UploadClass 
{ 
  / 
    @var UploadedFile $file; 
   / 
  protected $file; 
  / 
    上传错误信息 
    @var string 
   / 
  private $error = ''; //上传错误信息 
  private $fullPath='';//绝对地址 
  private $config = array( 
    'maxSize'    => 310241024, //上传的文件大小限制 (0-不做限制) 
    'exts'     => array('jpg','jpeg','gif','png','doc','docx','xls','xlsx','ppt','pptx','pdf','rar','zip'), //允许上传的文件后缀 
    'subName'    => '', //子目录创建方式，[0]-函数名，[1]-参数，多个参数使用数组 
    'rootPath'   => '/uploads/', //保存根路径 
    'savePath'   => '', //保存路径 
    'thumb'     => array(),//是裁剪压缩比例 
  ); 
  public function __construct($config = array()){ 
    / 获取配置 / 
    $this->config  =  array_merge($this->config, $config); 
    if(!emptyempty($this->config['exts'])){ 
      if (is_string($this->exts)){ 
        $this->config['exts'] = explode(',', $this->exts); 
      } 
      $this->config['exts'] = array_map('strtolower', $this->exts); 
    } 
    $this->config['subName'] = $this->subName ? ltrim($this->subName,'/') : '/'.date('Ymd'); 
    $this->fullPath = rtrim(public_path(),'/').$this->config['rootPath']; 
  } 
  public function __get($name) { 
    return $this->config[$name]; 
  } 
  public function __set($name,$value){ 
    if(isset($this->config[$name])) { 
      $this->config[$name] = $value; 
    } 
  } 
  public function __isset($name){ 
    return isset($this->config[$name]); 
  } 
  / 
    获取一次上传错误信息 
    @return string 错误信息 
   / 
  public function getError(){ 
    return $this->error; 
  } 
  public function upload($file){ 
     if(emptyempty($file)){ 
       $this->error = '没有上传的文件'; 
       return false; 
     } 
     if(!$this->checkRootPath($this->fullPath)){ 
       $this->error = $this->getError(); 
       return false; 
     } 
     $fileSavePath=$this->fullPath.$this->savePath.$this->subName; 
     if(!$this->checkSavePath($fileSavePath)){ 
       $this->error = $this->getError(); 
       return false; 
     } 
     $files =array(); 
     if(!is_array($file)){ 
       //如果不是数组转成数组 
       $files[]=$file; 
     }else{ 
       $files=$file; 
     } 
    $info  = array(); 
     $imgThumb = new \App\ThinkClass\ThumbClass(); 
     foreach ($files as $key=>$f){ 
       $this->file=$f; 
        $f->ext = strtolower($f->getClientOriginalExtension()); 
       /文件上传检查/ 
       if (!$this->check($f)){ 
         continue; 
       } 
       $fileName = str_random(12).'.'.$f->ext; 
       / 保存文件 并记录保存成功的文件 / 
       if ($this->file->move($fileSavePath,$fileName)) { 
         /图片按照宽高比例压缩/ 
         \Log::notice($fileSavePath.$fileName); 
         if(!emptyempty($this->thumb) && is_array($this->thumb)){ 
           $imgThumb ->thumb($this->thumb,$fileSavePath.'/'.$fileName); 
         } 
         $info[]=$this->rootPath.$this->savePath.$this->subName.'/'.$fileName; 
       } 
     } 
     return is_array($info) ? $info : false; 
  } 
  / 
    检测上传根目录 
    @param string $rootpath  根目录 
    @return boolean true-检测通过，false-检测失败 
   / 
  protected function checkRootPath($rootpath){ 
    if(!(is_dir($rootpath) && is_writable($rootpath))){ 
      $this->error = '上传根目录不存在！'; 
      return false; 
    } 
    return true; 
  } 
  / 
    检测上传目录 
    @param string $savepath 上传目录 
    @return boolean     检测结果，true-通过，false-失败 
   / 
  public function checkSavePath($savepath){ 
    / 检测并创建目录 / 
    if (!$this->mkdir($savepath )) { 
      return false; 
    } else { 
      / 检测目录是否可写 / 
      if (!is_writable($savepath)) { 
        $this->error = '上传目录不可写！'; 
        return false; 
      } else { 
        return true; 
      } 
    } 
  } 
  / 
    检查上传的文件 
    @param array $file 文件信息 
   / 
  private function check($file) { 
    / 检查文件大小 / 
    if (!$this->checkSize($file->getSize())) { 
      $this->error = '上传文件大小不符！'; 
      return false; 
    } 
    / 检查文件后缀 / 
    if (!$this->checkExt($file->ext)) { 
      $this->error = '上传文件后缀不允许'; 
      return false; 
    } 
    / 通过检测 / 
    return true; 
  } 
  / 
    检查文件大小是否合法 
    @param integer $size 数据 
   / 
  private function checkSize($size) { 
    return !($size > $this->maxSize) || (0 == $this->maxSize); 
  } 
  / 
    检查上传的文件后缀是否合法 
    @param string $ext 后缀 
   / 
  private function checkExt($ext) { 
    return emptyempty($this->config['exts']) ? true : in_array(strtolower($ext), $this->exts); 
  } 
  / 
    创建目录 
    @param string $savepath 要创建的穆里 
    @return boolean     创建状态，true-成功，false-失败 
   / 
  protected function mkdir($savepath){ 
    if(is_dir($savepath)){ 
      return true; 
    } 
    if(mkdir($savepath, 0777, true)){ 
      return true; 
    } else { 
      $this->error = "目录创建失败"; 
      return false; 
    } 
  } 
}

$upload = new UploadClass(); 
$upload->exts=array('jpg','png'); 
$upload->maxSize=510241024; 
$upload->savePath='course/uid_6'; 
$file = $request->file('fileImg'); 
$aa = $upload->upload($file); 
dd($aa);