laravel5.5框架的上传图片功能实例分析【仅传到服务器端】

本文实例讲述了laravel5.5框架的上传图片功能。分享给大家供大家参考，具体如下：

这里面包含单张和多张图片的上传

首先先来前端页面的html

<!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>

记得路径那改成post

然后就是后台代码

到config/filesystem.php下增加一个

'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
}

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