Home  >  Article  >  Backend Development  >  Example code sharing of how to download remote large files in PHP and obtain the file size

Example code sharing of how to download remote large files in PHP and obtain the file size

黄舟
黄舟Original
2018-05-15 10:50:433371browse

The following editor will bring you an example of downloading a large remote file in PHP (getting the remote file size). The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor and take a look.

No more nonsense, just go to the code

<?php
  // 暂不支持断点续传
  // $url = &#39;http://www.mytest.com/debian.iso&#39;; 不知道为何获取本地文件大小为0
  $url = &#39;http://192.168.8.93/download/vm-672/18/0.vmdk&#39;;
  $file = basename($url);
  $header = get_headers($url, 1);
  $size = $header[&#39;Content-Length&#39;];

  $fp = fopen($url, &#39;rb&#39;);
  if ($fp === false) exit(&#39;文件不存在或打开失败&#39;);

  header(&#39;Content-Description: File Transfer&#39;);
  header(&#39;Content-Type: application/octet-stream&#39;);
  header(&#39;Content-Disposition: attachment; filename="&#39;.$file.&#39;"&#39;);
  header(&#39;Content-Transfer-Encoding: binary&#39;);
  header(&#39;Expires: 0&#39;);
  header(&#39;Cache-Control: must-revalidate, post-check=0, pre-check=0&#39;);
  header(&#39;Pragma: public&#39;);
  header(&#39;Content-Length: &#39; . $size);

  ob_clean();
  ob_end_flush();
  set_time_limit(0);
  
  $chunkSize = 1024 * 1024;
  while (!feof($fp)) {
    $buffer = fread($fp, $chunkSize);
    echo $buffer;
    ob_flush();
    flush();
  }
  fclose($fp);
  exit;

The above is the detailed content of Example code sharing of how to download remote large files in PHP and obtain the file size. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn