Why "ftp_fget" is returning "bind() failed: Permission denied (13)" in php?

Question

I'm trying to read a csv file on a distant server using the ftp_fget and fgetcsv functions. I already practice this multiple times when reading files on distant servers and until now it works fine.

I can't figure out why ftp_fget is returning this error: bind() failed: Permission denied (13). Furthermore, I can't find any real explanations about this error message too.

My client who gave me distant server access said it's a Windows Server.

$distant_folder = "/myfolder/";
$filename = "myfile.csv";

$ftpstream = ftp_connect($ftp_server); 
$login = ftp_login($ftpstream, $ftp_user, $ftp_pass);

if($login){
    $tmp_handle = fopen('php://temp', 'r+');

    if (ftp_fget($ftpstream, $tmp_handle, $distant_folder.$filename, FTP_ASCII)){
        // do stuff with fgetcsv()...
    }
}

Please notice values of the ftp server variables are hidden for confidential reasons.

EDIT : I found a solution!

I used ftp_pasv($ftpstream, true); between ftplogin() and ftp_fget() functions.

Answer 1

You have to switch the connection to passive mode, so your FTP client ask a port to connect to the FTP server. Put it before ftp_put(), ftp_get(), ftp_nlist(), etc. for example:

ftp_pasv($connId, true);
$list = ftp_nlist($connId, ".");