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);
?>
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。
ftp_nb_get(
ftp_conn, local_file, server_file, mode, startpos);
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 |
返回值: | 以下值之一:
|
---|---|
PHP 版本: | 4.3+ |
PHP 变更日志: | PHP 7.3 - 的模式参数变为可选。 |
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