PHP 7.1.18 Released


(PHP 4, PHP 5)

ftp_pasvAttivaa o disattiva il modo passivo


bool ftp_pasv ( resource $ftp_stream , bool $pasv )

ftp_pasv() attiva il modo passivo se il parametro pasv e' TRUE. Disattiva il modo passivo se pasv e' FALSE. Nel modo passivo, le connessioni sono iniziate dal client piuttosto che dal server.

Example #1 Esempio di funzione ftp_pasv()

$remote_file 'readme.txt';

// stabilisce la connessione
$conn_id ftp_connect($ftp_server);

// si collega con username and password
$login_result ftp_login($conn_id$ftp_user_name$ftp_user_pass);

// attiva il modo passivo

// trasferisce un file al server
if (ftp_put($conn_id$remote_file$fileFTP_ASCII)) {
"$file trasferito correttamente\n";
} else {
"Si e' verificato un problema durante il trasferimento di $file\n";

// chiude la connessione

Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

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User Contributed Notes 7 notes

carda at two-wings dot net
3 years ago
It should be noted that ftp_pasv has to be called AFTER ftp_login (not after ftp_connect). May seem obvious to many but it took me three hours to find out...
marc at gutt dot it
5 years ago
If you are still having problems after choosing ftp_pasv() you should refresh the connection through ftp_close() / ftp_connect() after x files and/or y GB have been transfered.

It solved several (random) occurring problems like:

ftp_get(): Opening BINARY mode data connection

ftp_get(): Entering Passive Mode

Hint: fopen() created a file so don't forget to delete it if an error occurred ;)
ybourbeau at edison dot ca
16 years ago
Directly from bsd FTP manual pages:

The PASV command requests that the remote server open a port for the data connection and return the address of that port.  The remote server listens on that port and the client connects to it.

                 When using the more traditional PORT command, the client listens on a port and sends that address to the remote server, who connects back to it.  Passive mode is useful when using ftp through a gateway router or host that controls the directionality of traffic.  (Note that though ftp servers are required to support the PASV command by RFC 1123, some do not.)
sameg14 at gmail dot com
4 years ago
If you are running filezilla in passive mode, on windows, and try to connect using PHP, you might encounter an error that reads "425 Can't open data connection for transfer of ..."
This error is not indicative of a passive mode issue, but can be resolved by using
($conn, true);
mac at codegreene dot com
7 years ago
I found one place that required passive mode to function properly, but the initial error manifested itself in an odd way:

PHP Warning:  ftp_put(): TYPE is now ASCII in <file.php> on line <#>


PHP Warning:  ftp_put(): TYPE is now 8 BIT BINARY in <file.php> on line <#>

The other symptom is that it was taking a long time, perhaps the 90 seconds that the timeout was set to. No errors occurred upon connect, just when I tried ftp_put().

Once I turned on ftp_pasv() it worked, both in the place where active mode worked, and on the server where active mode wouldn't work.
8 years ago
If you find that you are receiving "Illegal PORT command" errors you may want to try enabling passive mode.
16 years ago
PASV: For ftp users behind firewall, the server LISTEN for a connection.

Non-PASV: The client LISTEN for a connection from server.
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