我很好奇如何使用PHP通过FTP上传文件。假设我有一个SQL函数，它将返回一个文件名（动态名称），并使用返回的文件名上传文件。我该怎么做？

但是错误是"PHP警告：ftp_put：未能打开流：没有这样的文件或目录在..."

我的代码：

<?php
$db = pg_connect("host=localhost port=5432 dbname=automationReporting user=postgres password=admin") or die("gagal konek.");

/$query = pg_query($db, "select lookup_cell();");

$arr = pg_fetch_array($query, 0, PGSQL_NUM);

$file = $arr[0].'.csv'; 
$remote_file = '/nury/'; // <-- my directory on server 

$ftp_server = '192.168.1.128';
$ftp_user_name = 'polban';
$ftp_user_pass = 'polban2014';

// set up basic connection
$conn_id = ftp_connect($ftp_server);

// login with username and password
$login = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

// Passive mode
// ftp_pasv ($conn_id, true);

$ftp = ftp_put($conn_id, $remote_file, $file, FTP_ASCII);

//var_dump($ftp); die();

// upload a file
if ($ftp) {
 echo "successfully uploaded $file\n";
} else {
 echo "There was a problem while uploading $file\n";
}

// close the connection
ftp_close($conn_id);

?>