ftp_get:非法 PORT 命令

On 'localhost' I tried to get a file from FTP server and the local file is successfully created. But when I'm trying in Ubuntu server it's displaying there was a problem and file is not downloading into server. Here is the code. And code file created in this location /var/www/html/

<?php
$local_file = 'whdfcleads.csv';
$server_file = 'hdfc/hdfc_leads.csv';
$ftp_server="*********";
$conn_id = ftp_connect($ftp_server)or die("Couldn't connect to $ftp_server");
$ftp_user_name="*****";
$ftp_user_pass="******";
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
if (ftp_get($conn_id, $local_file, $server_file, FTP_BINARY)) {
  echo "Successfully written to $local_file
";
}
else{
  echo "There was a problem
";
}
ftp_close($conn_id);
?>

请帮我解决这个问题，在本地主机上它工作正常，但在 Ubuntu 服务器本地文件没有创建/下载.

Array (
    [type] => 2
    [message] => ftp_get(): Illegal PORT command
    [file] => /var/www/html/wftp.php
    [line] => 15
)

...
ftp_login($conn_id, $usr, $pwd) or die("Cannot login");
ftp_pasv($conn_id, true) or die("Cannot switch to passive mode");
...