Laravel+Layer实现图片上传功能(整理篇)

<input type="hidden" name="_token" value="<?php echo csrf_token(); ?>">

<form method="POST" action="/profile"> {{ csrf_field() }} ...</form>

<input type="hidden" name="_token" class="tag_token" value="<?php echo csrf_token(); ?>">

var tag_token = $(".tag_token").val();

data:{'_token':tag_token}

<script type="text/javascript" src="layui/layui.js"></script><script src="https://code.jquery.com/jquery-3.2.1.min.js"></script><link rel="stylesheet" type="text/css" href="layui/css/layui.css" rel="external nofollow" />

<div class="layui-form-item"> 
<div class="layui-upload">  
 <button type="button" name="img_upload" class="layui-btn btn_upload_img">  
<i class="layui-icon"></i>上传图片  </button>  
<img class="layui-upload-img img-upload-view" src="upload/dog.jpg">  
<p id="demoText"></p> 
</div> 
</div>

<script type="text/javascript">
 layui.use('upload', function(){
 var upload = layui.upload;
 var tag_token = $(".tag_token").val();
 //普通图片上传
 var uploadInst = upload.render({
  elem: '.btn_upload_img'
  ,type : 'images'
  ,exts: 'jpg|png|gif' //设置一些后缀，用于演示前端验证和后端的验证
  //,auto:false //选择图片后是否直接上传
  //,accept:'images' //上传文件类型
  ,url: 'upload.php'
  ,data:{'_token':tag_token}
  ,before: function(obj){
  //预读本地文件示例，不支持ie8
  obj.preview(function(index, file, result){
   $('.img-upload-view').attr('src', result); //图片链接（base64）
  });
  }
  ,done: function(res){
  //如果上传失败
  if(res.status == 1){
   return layer.msg('上传成功');
  }else{//上传成功
   layer.msg(res.message);
  }
  }
  ,error: function(){
  //演示失败状态，并实现重传
  return layer.msg('上传失败,请重新上传');
  }
 });
 });
</script>

if ($_POST) {
 //上传图片具体操作
 $file_name = $_FILES['file']['name'];
 //$file_type = $_FILES["file"]["type"];
 $file_tmp = $_FILES["file"]["tmp_name"];
 $file_error = $_FILES["file"]["error"];
 $file_size = $_FILES["file"]["size"];
 if ($file_error > 0) { // 出错
 $message = $file_error;
 } elseif($file_size > 1048576) { // 文件太大了
 $message = "上传文件不能大于1MB";
 }else{
 $date = date('Ymd');
 $file_name_arr = explode('.', $file_name);
 $new_file_name = date('YmdHis') . '.' . $file_name_arr[1];
 $path = "upload/".$date."/";
 $file_path = $path . $new_file_name;
 if (file_exists($file_path)) {
  $message = "此文件已经存在啦";
 } else {
 //TODO 判断当前的目录是否存在，若不存在就新建一个!
 if (!is_dir($path)){mkdir($path,0777);}
  $upload_result = move_uploaded_file($file_tmp, $file_path); 
  //此函数只支持 HTTP POST 上传的文件
  if ($upload_result) {
  $status = 1;
  $message = $file_path;
  } else {
  $message = "文件上传失败，请稍后再尝试";
  }
 }
 }
} else {
 $message = "参数错误";
}
return showMsg($status, $message);

function showMsg($status,$message = '',$data = array()){
 $result = array(
 'status' => $status,
 'message' =>$message,
 'data' =>$data
 );
 exit(json_encode($result));
}

<!--如果使用的是Laravel框架，打开下面这句话！-->
 <!--<input type="hidden" name="_token" class="tag_token" value="<?php /*echo csrf_token(); */?>">-->

//TODO 判断当前的目录是否存在，若不存在就新建一个!
if (!is_dir($path)){mkdir($path,0777);}

'upload' => [
  'driver' => 'local',
  'root' => public_path('upload/image/'.date('Ymd')),
 ],

public function img_file(Request $request)
 {
 $status = 0;
 $data = [];
 if ($request->method()== 'POST') {
  $date = date('Ymd');
  $path = $request->file('file')->store('', 'upload');
  if ($path){
  $fileUrl = '/upload/image/'.$date.'/'.$path;
  $status = 1;
  $data['url'] = $fileUrl;
  $message = '上传成功';
  }else{
  $message = "上传失败";
  }
 } else {
  $message = "参数错误";
 }
 return showMsg($status, $message,$data);
 }