Home  >  Article  >  Backend Development  >  A brief discussion on the function of php fopen to download remote files

A brief discussion on the function of php fopen to download remote files

高洛峰
高洛峰Original
2016-12-21 15:59:131323browse

As shown below:

//下载附件
function get_file($url, $folder = "./") {  
  set_time_limit (24 * 60 * 60); // 设置超时时间  
  $destination_folder = $folder . '/'; // 文件下载保存目录,默认为当前文件目录  
  if (!is_dir($destination_folder)) { // 判断目录是否存在  
      mkdirs($destination_folder); // 如果没有就建立目录  
  }  
  $newfname = $destination_folder . basename($url); // 取得文件的名称  
  $file = fopen ($url, "rb"); // 远程下载文件,二进制模式  
  if ($file) { // 如果下载成功  
      $newf = fopen ($newfname, "wb"); // 远在文件文件  
    if ($newf) // 如果文件保存成功  
      while (!feof($file)) { // 判断附件写入是否完整  
        fwrite($newf, fread($file, 1024 * 8), 1024 * 8); // 没有写完就继续  
    }  
  }  
  if ($file) {  
    fclose($file); // 关闭远程文件  
  }  
  if ($newf) {  
    fclose($newf); // 关闭本地文件  
  }  
  return true;  
}  
function mkdirs($path , $mode = "0755") {  
  if (!is_dir($path)) { // 判断目录是否存在  
      mkdirs(dirname($path), $mode); // 循环建立目录   
    mkdir($path, $mode); // 建立目录  
  }  
  return true;  
 
}
 
 
 
 
// 使用示例  
echo get_file('xxxxx.pdf');

The above article briefly discussing the function of php fopen to download remote files is all the content shared by the editor. I hope it can give you a reference, and I also hope that everyone will support 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