laravel5.5框架的上传图片功能实例分析【仅传到服务器端】

!DOCTYPE html>
html>
head>
  title>上传图片/title>
/head>
body>
form method="post" action="{{url('uploadImgs')}}" enctype="multipart/form-data">
  {{csrf_field()}}
  input type="file" name="filename[]">br/>
  input type="file" name="filename[]">br/>
  input type="file" name="filename[]">
  button type="submit">上传图片/button>
/form>
/body>

'upload' => [
      'driver' => 'local',
      'root' => 'uploadImages'
    ],

use Illuminate\Http\Request;

// 单张图片
 public function uploadImg(Request $request){
   if ($request->hasFile('filename')) {
      $postPics = $request->file('filename');
      foreach ($postPics as $k => $v) {
        $extension = $v->extension();
        $rule = ['jpg', 'png', 'gif', 'jpeg'];
        if (!in_array($extension, $rule)) {
          return '图片格式需要为jpg,png,gif格式';
        }
        $dir = date('ymd');
        $fileName = time() . mt_rand(1, 999) . ".jpg";
        $storeResult = $v->storeAs('filename', $dir . "/" . $fileName, 'upload');// 默认保存位置是要到filesystem.php设置，保存到storage/app/..
        $outPut[] = [
          'img_url' => "images/" . $storeResult, 'uid' => $uid, 'exam_id' => $examId, 'question_id' => $questionId,
        ];
      }
      DB::table('x2_upload_img')->insert($outPut);
      echo "写到数据库了，图片上去了只是ide加载很慢";

    } else {
      exit('未获得到上传文件，或上传失败');
    }

// 多图上传
public function uploadImgs(Request $request){
    if($request->hasFile('filename')){
      $postPics = $request->file('filename');
      foreach ($postPics as $k=>$v){
        $extension = $v->extension();
        $rule = ['jpg','png','gif','jpeg'];
        if(!in_array($extension,$rule)){
          return '图片格式需要为jpg,png,gif格式';
        }
        $storeResult = $v->storeAs('filename','201810/test1.jpg','upload');// 默认保存位置是要到filesystem.php设置，保存到storage/app/..

        $outPut[] = [
          'extension' => $extension,
          'store_result' => $storeResult
        ];
      }
      echo "pre>";
      print_r($outPut);die;
    }
    exit('未获得到上传文件，或上传失败');
}

// 上传图片第二种方式(form表单直接传过来)
public uploadImg(){
    $image = $_FILES["photo"]["tmp_name"];
    $fp = fopen($image, "r");
    $file = fread($fp, $_FILES["photo"]["size"]); //二进制数据流
    //保存地址
    $imgDir = './Uploads/';
    //要生成的图片名字
    $filename = date("Ym")."/".md5(time().mt_rand(10, 99)).".png"; //新图片名称
    $newFilePath = $imgDir.$filename;
    $data = $file;
    $newFile = fopen($newFilePath, "w"); //打开文件准备写入
    fwrite($newFile, $data); //写入二进制流到文件
    fclose($newFile); //关闭文件
}