Solution to Transfer files by php ftp_put() : warning: ftp_put() [function.ftp-put]: Opening data connection

Dominique De Cooman

Wednesday, June 24, 2009 - 22:58

The whole thing did not work without this line.

ftp_pasv($conn_id, true);

Apparently with some ftp accounts you need to transfer in passive mode. As usual not documented by the client.

The full excerpt:

<?php
function exporter_vdab_ftp($file_path,$file_name) {
  // set up basic connection
  $file = $file_path . '/'.$file_name;
  $ftp_server = VDAB_FTP_SERVER;
  $conn_id = ftp_connect($ftp_server);

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

  // check connection
  if ((!$conn_id) || (!$login_result)) {
    print "FTP connection has failed!";
    print "Attempted to connect to $ftp_server for user $ftp_user_name";
    return false;
  }
  else {
     print "Connected to $ftp_server, for user $ftp_user_name";
  }
  
  //turn passive mode on
  ftp_pasv($conn_id, true);

  // upload the file
  $upload = ftp_put($conn_id, VDAB_REMOTE_PATH . '/' . $file_name, $file, FTP_BINARY);

  // close the FTP stream
  ftp_close($conn_id);
}
?>