php下载远程大文件(获取远程文件大小)的实例

2021-05-28 18:19PHP教程网 PHP教程

下面小编就为大家带来一篇php下载远程大文件(获取远程文件大小)的实例。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

废话不多说，直接上代码

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									<?php

									  // 暂不支持断点续传

									  // $url = 'http://www.mytest.com/debian.iso'; 不知道为何获取本地文件大小为0

									  $url = 'http://192.168.8.93/download/vm-672/18/0.vmdk';

									  $file = basename($url);

									  $header = get_headers($url, 1);

									  $size = $header['Content-Length'];

									  $fp = fopen($url, 'rb');

									  if ($fp === false) exit('文件不存在或打开失败');

									  header('Content-Description: File Transfer');

									  header('Content-Type: application/octet-stream');

									  header('Content-Disposition: attachment; filename="'.$file.'"');

									  header('Content-Transfer-Encoding: binary');

									  header('Expires: 0');

									  header('Cache-Control: must-revalidate, post-check=0, pre-check=0');

									  header('Pragma: public');

									  header('Content-Length: ' . $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;