[PHP] CURL文件上傳

一、說明

　　本文主要簡述CURL進行文件上傳的一般操作，基於TP5框架；

　　

二、前端

　　代碼如下，需要填入對應的上傳地址還有修改接收的參數名字(這裏是 file)：

 <form  action="上傳地址"  method="post" enctype="multipart/form-data">
        <input type="file" name="file"> 
        <button type="submit">上傳</button>
    </form>

 

 

三、後端

　　下面是基於TP5的上傳處理，通過CURL上傳到另外一臺服務器上。

 1 <?php
 2 namespace app\controller;
 3 
 4 use think\Controller;
 5 
 6 //文件上傳類
 7 class Upload extends Controller
 8 {
 9     protected $file_size = 20971520;//20M
10     protected $file_type = ["png", "jpg", "jpeg", "gif"];
11     protected $ret = ['code'=>0, 'msg'=>'', 'data'=>[]];
12     private $uploadUrl = "http://xxx.com";//上傳地址
13 
14     public function doit()
15     {
16         try{
17             $verify = $file->validate(['size'=>$this->file_size,'ext'=>$this->file_type]);
18             if (!$verify) {
19                 throw new \Exception('上傳的文件大小超過20M, 或文件類型不正確');
20             }
21 
22             $ext = pathinfo($file->getInfo('name'))['extension'];
23             $tm = time();
24             $mime = $file->getInfo('type');
25 
26             //表單請求參數
27             $postData = [
28                 'file' => new \CURLFile(realpath($file->getPathname()), $mime, $fileName.".{$ext}"),
29             ];
30 
31             $curlRes = $this->curlUploadFile($this->uploadUrl, $postData);
32             $res = json_decode($curlRes, true);
33 
34             if($res['code'] == 200 && $res['data']['filePath'] != ""){
35                 $this->ret['code'] = 200;
36                 $this->ret['msg'] = '文件上傳成功';
37                 $this->ret['data'] = ['filePath' => $res['data']['filePath']];
38             }else{
39                 throw new \Exception('上傳文件失敗: '.$res['msg'], 500);
40             }
41         }catch(\Exception $ex){
42             //異常處理
43             $this->ret['code'] = 500;
44             $this->ret['msg'] = $ex->getMessage();
45         }
46         return json($this->ret);//返回json
47     }
48
50 
51     //CURL文件上傳
52     private function curlUploadFile($url, $data)
53     {
54         $curl = curl_init();
55         if (class_exists('\CURLFile')) {
56             curl_setopt($curl, CURLOPT_SAFE_UPLOAD, true);
57             //$data = array('file' => new \CURLFile(realpath($path)));//>=5.5
58         } else {
59             if (defined('CURLOPT_SAFE_UPLOAD')) {
60                 curl_setopt($curl, CURLOPT_SAFE_UPLOAD, false);
61             }
62             //$data = array('file' => '@' . realpath($path));//<=5.5
63         }
64         curl_setopt($curl, CURLOPT_URL, $url);
65         curl_setopt($curl, CURLOPT_POST, 1 );
66         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
67         curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
68         $result = curl_exec($curl);
69         $error = curl_error($curl);
70 
71         curl_close($curl);
72 
73         return $result;
74     }
75 }