ftp_nb_get
ftp_nb_get
Retrieves a file from the FTP server and writes it to a local file (non-blocking)
**ftp_nb_get** FTP\Connection $ftp string $local_filename string $remote_filename int $mode int $offset
retrieves a remote file from the FTP server,
and saves it into a local file.
ftp_nb_get
The difference between this function and is that
this function retrieves the file asynchronously, so your program can perform
other operations while the file is being downloaded.
ftp_get
ftp``local_filenameThe local file path (will be overwritten if the file already exists).
remote_filenameThe remote file path.
mode
The transfer mode. Must be either or
.
FTP_ASCII``FTP_BINARY
offsetThe position in the remote file to start downloading from.
Returns or
or , or false on failure to open the local file.
FTP_FAILED``FTP_FINISHED``FTP_MOREDATA
Voorbeeld: example
<?php
// Initiate the download
$ret = ftp_nb_get($ftp, "test", "README", FTP_BINARY);
while ($ret == FTP_MOREDATA) {
// Do whatever you want
echo ".";
// Continue downloading...
$ret = ftp_nb_continue($ftp);
}
if ($ret != FTP_FINISHED) {
echo "There was an error downloading the file...";
exit(1);
}
?>
**Voorbeeld: Resuming a download with **
<?php
// Initiate
$ret = ftp_nb_get($ftp, "test", "README", FTP_BINARY,
filesize("test"));
// OR: $ret = ftp_nb_get($ftp, "test", "README",
// FTP_BINARY, FTP_AUTORESUME);
while ($ret == FTP_MOREDATA) {
// Do whatever you want
echo ".";
// Continue downloading...
$ret = ftp_nb_continue($ftp);
}
if ($ret != FTP_FINISHED) {
echo "There was an error downloading the file...";
exit(1);
}
?>
**Voorbeeld: Resuming a download at position 100 to a new file with **
<?php
// Disable Autoseek
ftp_set_option($ftp, FTP_AUTOSEEK, false);
// Initiate
$ret = ftp_nb_get($ftp, "newfile", "README", FTP_BINARY, 100);
while ($ret == FTP_MOREDATA) {
/* ... */
// Continue downloading...
$ret = ftp_nb_continue($ftp);
}
?>
In the example above, is 100 bytes smaller
than on the FTP server because we started
reading at offset 100. If we didn't disable
, the first 100 bytes of
would be .
FTP_AUTOSEEK``'\0'
ftp_nb_fget``ftp_nb_continue``ftp_fget``ftp_get