lumen 支持多文件上传

1、webform (注意：name后面一定要加[]号)

<form method="post" enctype="multipart/form-data" action="http://127.0.0.1/mobile/public/api/wx/user/upload" >
    First name: <input type="file" name="file[]" /><br />
    First name: <input type="file" name="file[]" /><br />
    Last name: <input type="text" name="token" /><br />
    <input type="submit" value="提交" />
</form>

　　注：HTML５的文件已经支持多文件上传：

<input type="file" name="file[]" 　multiple/>

2、后端处理

 /*上传文件到服务器*/
     public function uploadFile(\Illuminate\Http\Request $request)
     {

         $this->validate($request,array('token'=>'required|string'));
         $this->validationUser($uid,$this->authService);
         if($request->hasFile('file')) {
             $root = $request->server('DOCUMENT_ROOT');
             $file = $request->file('file');
             //return var_dump($file);
             $filePath=[]; // 定义空数组用来存放图片路径
             foreach ($file as $k => $v) {
                 // 判断图片上传中是否出错
                  if (!$v->isValid()) {
                 $this->apiReturn("上传图片出错，请重试！",1);
                  }
                 //此处防止没有多文件上传的情况
                   if(!empty($v)){
                 if ($v->getSize() / 1024 > 600)
                     return $this->apiReturn("请检查您上传的文件不能大于600KB", 1);
                 $fileName = strtolower($v->getClientOriginalName());
                 if (!preg_match('/\.(jpg|jpeg|png|gif)$/', $fileName))
                     return $this->apiReturn("您只能上传通用的图片格式", 1);
                 $destinationPath = '/mobile/resources/uploads/' . date('Ymd');
                 $fileExtendName = substr($fileName, strpos($fileName, '.'));
                 $realPath = $root . $destinationPath;
                 if (!file_exists($realPath))
                     mkdir($realPath);
                 $newFileName = uniqid() . mt_rand(1, 100000) . $fileExtendName;
                 $v->move($realPath, $newFileName);
                $filePath[]=$destinationPath . '/' . $newFileName;
             }}
             return $this->apiReturn(json_encode($filePath), 0);
         }
         else
             return $this->apiReturn('请选择文件再上传', 1);
     }

原生多文件上传：

/*多文件上传*/
    public  function  uploadImg($file_name,$dir,$format='string')
    {
        $file = $_FILES[$file_name];
        if($file) {
            $root =$_SERVER['DOCUMENT_ROOT'];
            $filePath=[]; // 定义空数组用来存放图片路径
           $fileNumber=count($file['name']);
            for($i=0;$i<$fileNumber;$i++) {

                //此处防止没有多文件上传的情况
                  if(!empty($file['name'][$i])){
                                     if ($file['size'][$i] / 1024 > 600)
                                     {
                                         return ['error'=>"请检查您上传的文件不能大于600KB"];
                                     }

                 $fileName = strtolower($file['name'][$i]);
                 if (!preg_match('/\.(jpg|jpeg|png|gif)$/', $fileName))
                 {
                     return ['error'=>'您只能上传通用的图片格式'];
                 }

                $destinationPath = $dir. date('Ymd');
                 $fileExtendName = substr($fileName, strpos($fileName, '.'));
               $realPath = $root . $destinationPath;
               if (!file_exists($realPath))
               {
                   make_dir($realPath);
               }
                $newFileName = uniqid() . mt_rand(1, 100000) . $fileExtendName;
               move_uploaded_file($file['tmp_name'][$i], $realPath.'/'.$newFileName);
                $filePath[]=$destinationPath . '/' . $newFileName; }
            }
            if($format=='string')
                     return implode(',',$filePath);
        }
        else
            return ['error'=>'请选择文件再上传'];
    }