php模擬input 的file上傳文件

時間 2019-12-17

標籤 php 模擬 input file 上傳文件欄目 PHP 简体版

原文原文鏈接

遇到一個需求是要把前端的上傳文件經過php拿到而後再上傳給接口，由於不能瀏覽器不能跨域上傳拿到返回值，因此只能用前端上傳，而後php拿到文件再上傳一次。以前在網上找到curl方式不能上傳二進制文件流，失敗了結，代碼以下：php

上傳函數：前端

function curl_upload_file($url,$filename,$path,$type,$d){
   if (class_exists('\CURLFile')) {
   $data['file'] = new \CURLFile(realpath($path),$type,$filename);
   } else {
   $data['file'] = '@'.realpath($path).";type=「.$type.」;filename=".$filename;
   }json

   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $curl);
   curl_setopt($ch, CURLOPT_POST, true );
   curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
   curl_setopt($ch, CURLOPT_HEADER, false);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   $return_data = curl_exec($ch);
   curl_close($ch);
   return $return_data;
   }api

函數使用：跨域

$file = $_FILES['file'];瀏覽器

$data = $this->curl_upload_file($url, $file['name'], $file['tmp_name'], $file['type'],$request);app

失敗了結。curl

以後又在網上找到了二進制文件流的方式來模擬上傳，終於成功，特寫上完整代碼函數

public function batchUpload(){post

       ini_set('upload_max_filesize', '10M');
       ini_set('post_max_size', '10M');
       ini_set('memory_limit', '128M');
       $request = array();
       $request['type'] = $req->getParameter('type','1');
       $request['userToken'] = $this->userToken;
       $request['apiKey'] = $this->apiKey;
       $url ="http:www.test.com/comdata/importExcelSuit?";
       $result = array();
       $result['success'] = 1;

       $allowtype = array("xlsx", "xls");
       $file = $_FILES['file'];
       $aryStr = explode(".", $file['name']);
       $allowsize = 10485760;
       if (!in_array(strtolower($aryStr[count($aryStr)-1]), $allowtype)) {
       $result['success'] = -1;
       $result['msg'] = "請上傳excel文件！";

       }

       if ($file['error'] != 0) {
           $result['success'] = -1;
           $result['msg'] = '上傳出錯';
       }

       if ($file['size'] > $allowsize) {
           $result['success'] = -1;
           $result['msg'] = '請上傳文件大小小於10M';
       }

       if($result['success']!=-1){

           $fileurl = $url .'?'. http_build_query($request);
           $data = base::sendStreamFile($fileurl,$file['tmp_name']);
           $result['data'] = json_decode($data,true);
           if($result['data']['statuscode'] != 1){
               $result['success'] = -1;
               $result['msg'] = $result['data']['dataInfo'];
           }else{

               $result['success'] = 1;
           }

       }

echo json_encode($result);

}

上傳函數爲

   static function sendStreamFile($url,$file)
   {
   if (empty($url) || empty($file))
   {
   return false;
   }
   $opts = array(
   'http' => array(
   'method' => 'POST',
   'header' => 'content-type:application/x-www-form-urlencoded',
   'content' => $file
   )
   );
   $context = stream_context_create($opts);
   $response = file_get_contents($url, false, $context);
   return $response;

   }