ftp_nb_get
Hi,
I tried to use both ftp_put() and ftp_nb_put() adding the
variable $start = date("Y:m:d h:i:s"); at the begin of the script and the variable $end = date("Y:m:d h:i:s"); at its end, after the file upload function.
With the gprs connection I'm now using and trying to upload a .jpg file of 67,5 kb the time difference between $start and $end was 40 seconds in both cases, so I can suppose that there is no difference between these upload function.
The difference comes if you put anything inside the while ($ftp_upload == FTP_MOREDATA) loop.
I hope this note can help.
Regards
ftp_nb_put
(PHP 4 >= 4.3.0, PHP 5)
ftp_nb_put — Stores a file on the FTP server (non-blocking)
Description
int ftp_nb_put
( resource $ftp_stream
, string $remote_file
, string $local_file
, int $mode
[, int $startpos
] )
ftp_nb_put() stores a local file on the FTP server.
The difference between this function and the ftp_put() is that this function uploads the file asynchronously, so your program can perform other operations while the file is being uploaded.
Parameters
- ftp_stream
-
The link identifier of the FTP connection.
- remote_file
-
The remote file path.
- local_file
-
The local file path.
- mode
-
The transfer mode. Must be either FTP_ASCII or FTP_BINARY.
- startpos
Return Values
Returns FTP_FAILED or FTP_FINISHED or FTP_MOREDATA.
Examples
Example #1 ftp_nb_put() example
<?php
// Initiate the Upload
$ret = ftp_nb_put($my_connection, "test.remote", "test.local", FTP_BINARY);
while ($ret == FTP_MOREDATA) {
// Do whatever you want
echo ".";
// Continue uploading...
$ret = ftp_nb_continue($my_connection);
}
if ($ret != FTP_FINISHED) {
echo "There was an error uploading the file...";
exit(1);
}
?>
Example #2 Resuming an upload with ftp_nb_put()
<?php
// Initiate
$ret = ftp_nb_put($my_connection, "test.remote", "test.local",
FTP_BINARY, ftp_size("test.remote"));
// OR: $ret = ftp_nb_put($my_connection, "test.remote", "test.local",
// FTP_BINARY, FTP_AUTORESUME);
while ($ret == FTP_MOREDATA) {
// Do whatever you want
echo ".";
// Continue uploading...
$ret = ftp_nb_continue($my_connection);
}
if ($ret != FTP_FINISHED) {
echo "There was an error uploading the file...";
exit(1);
}
?>
add a note
User Contributed Notesftp_nb_put
kaiohken1982 at hotmail dot com
28-Nov-2006 06:53
28-Nov-2006 06:53
Ariel asphp at dsgml dot com
12-Jul-2006 02:11
12-Jul-2006 02:11
Don't add a sleep() inside the loop. If you do you will severely slow down the upload.
In my tests, each time through the loop it send about 2.5K, looping about 220 times per second. (Which is very little.)
You won't necessarily get the same numbers as me per loop, but clearly PHP does it's own management of the loop so that you don't consume all the CPU on the server.
brandon dot farber at gmail dot com
01-Feb-2006 05:14
01-Feb-2006 05:14
I couldn't see this noted anywhere...
ftp_nb_put apparently takes a much much longer time to upload the file than ftp_put (I haven't done any packet sniffing or logging tests to find out why). I was using a script, nearly identical to the example above, and a 100KB file had only uploaded 3.99KB after about 8 minutes! The php script naturally timed out before it was complete.
I changed my function to use ftp_put, got rid of the loop to check FTP_MOREDATA (as you will see in the example above), and the same script uploaded 2.2MB within 30 seconds with no other changes.
If you're using this function instead of ftp_put *purely to try to speed up your script* and it's taking a long time, you might want to try ftp_put instead.
ted at hostleft dot com
11-Jan-2005 03:13
11-Jan-2005 03:13
If you receive an error like:
Warning: ftp_nb_put(): Unable to service PORT commands in /path/to/file.php on line 27
verify whether you need to be in PASV mode. You can go into PASV mode by declaring
> ftp_pasv($cnx,TRUE);
manu at manux dot org
07-Jan-2005 01:35
07-Jan-2005 01:35
When using non blocking functions if you try to disconnect while your non blocking operation is in progress the disconnect command will not work until the operation is not finished.