目录

PHP ftp_nb_get() 函数

❮ PHP FTP 参考

示例

从FTP服务器下载文件,并将其保存到本地文件(非阻塞):

<?php
// connect and login to FTP server
$ftp_server = "ftp.example.com";
$ftp_conn = ftp_connect($ftp_server) or die("Could not connect to $ftp_server");
$login = ftp_login($ftp_conn, $ftp_username, $ftp_userpass);

$local_file = "local.zip";
$server_file = "server.zip";

// initiate download
$d = ftp_nb_get($ftp_conn, $local_file, $server_file, FTP_ASCII)

while ($d == FTP_MOREDATA)
  {
  // do whatever you want
  // continue downloading
  $d = ftp_nb_continue($ftp_conn);
  }

if ($d != FTP_FINISHED)
  {
  echo "Error downloading $server_file";
  exit(1);
  }

// close connection
ftp_close($ftp_conn);
?>

定义和用法

ftp_nb_get() 函数从 FTP 服务器获取(下载)文件,并将其保存到本地文件中(非阻塞)。

提示:此功能(与ftp_get()) 异步检索文件,因此您可以在下载文件时执行其他操作。


语法

ftp_nb_get( ftp_conn, local_file, server_file, mode, startpos);

参数值

Parameter Description
ftp_conn Required. Specifies the FTP connection to use
local_file Required. Specifies the local file path (will be overwritten if the file already exists)
server_file Required. Specifies the server file to download
mode Optional. Specifies the transfer mode. Possible values: FTP_ASCII or FTP_BINARY
startpos Optional. Specifies the position in the remote file to start downloading from


技术细节

返回值: 以下值之一:
  • FTP_FAILED(发送/接收失败)
  • FTP_FINISHED(发送/接收完成)
  • FTP_MOREDATA(正在发送/接收)
PHP 版本: 4.3+
PHP 变更日志: PHP 7.3 - 的模式参数变为可选。

❮ PHP FTP 参考