Description:
------------
I am trying to connect one server with mine through ftp. Connection is working nice. but when im trying to download file from the server then its give me one Warning: ftp_get(): Unable to build data connection: No route to host 

Reproduce code:
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$ftpobj = new ftpclass();
$ftp_server = "server_name";
$conn_id = ftp_connect($ftp_server); 
$ftp_user_name = "user";
$ftp_user_pass = "password";
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); 
if ((!$login_result)) 
{ 
        echo "Attempted to connect to $ftp_server for user $ftp_user_name has failed!"; 
	exit; 
}
$local_file = "3026_1491378_mp.txt.gz";
$remote_file = "merchandiser/3026_1491378_mp.txt.gz";
$download = ftp_get ( $conn_id, $local_file, $remote_file, FTP_BINARY);	
if ($download)
{
	echo "Successfully written to $local_file\n";
} 
else 
{ 
	echo "No such file or directory available for download \n";
}


Expected result:
----------------
Successfully written to $local_file

Actual result:
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Warning: ftp_get(): Unable to build data connection: No route to host