php man page for ftp_pasv

FTP_PASV(3)								 1							       FTP_PASV(3)

ftp_pasv - Turns passive mode on or off

SYNOPSIS
       bool ftp_pasv (resource	$ftp_stream, bool  $pasv)

DESCRIPTION
       ftp_pasv(3)  turns on or off passive mode. In passive mode, data connections are initiated by the client, rather than by the server. It may
       be needed if the client is behind firewall.

	Please note that ftp_pasv(3) can only be called after a successfull login or otherwise it will fail.

PARAMETERS
	      o $ftp_stream
		- The link identifier of the FTP connection.

	      o $pasv
		- If TRUE, the passive mode is turned on, else it's turned off.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      ftp_pasv(3) example

	      <?php
	      $file = 'somefile.txt';
	      $remote_file = 'readme.txt';

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

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

	      // turn passive mode on
	      ftp_pasv($conn_id, true);

	      // upload a file
	      if (ftp_put($conn_id, $remote_file, $file, FTP_ASCII)) {
	       echo "successfully uploaded $file
";
	      } else {
	       echo "There was a problem while uploading $file
";
	      }

	      // close the connection
	      ftp_close($conn_id);
	      ?>

PHP Documentation Group 													       FTP_PASV(3)