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ftp_login> <ftp_get_option
Last updated: Fri, 10 Oct 2008

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ftp_get

(PHP 4, PHP 5)

ftp_getPobiera plik z serwera FTP

Opis

bool ftp_get ( resource $strumień_ftp , string $plik_lokalny , string $plik_zdalny , int $tryb [, int $pozycja_wznowienia ] )

ftp_get() pobiera zdalny plik z serwera FTP i zapisuje go do lokalnego pliku.

Parametry

strumień_ftp

Identyfikator połączenia z serwerem FTP.

plik_lokalny

Ścieżka do pliku lokalnego (zostanie on nadpisany, jeśli plik taki już istnieje).

plik_zdalny

Ścieżka do pliku zdalnego.

tryb

Tryb transferu. Musi to być FTP_ASCII lub FTP_BINARY.

pozycja_wznowienia

Pozycja w pliku zdalnym, od której rozpoczęte zostanie pobieranie.

Zwracane wartości

Zwraca TRUE w przypadku powodzenia, FALSE w przypadku błędu.

Przykłady

Example #1 Przykład użycia ftp_get()

<?php

// definicja zmiennych
$plik_lokalny 'local.zip';
$plik_zdalny 'server.zip';

// ustanowienie połączenia
$conn_id ftp_connect($ftp_server);

// logowanie
$login_result ftp_login($conn_id$ftp_user_name$ftp_user_pass);

// próba pobrania $plik_zdalny i zapisania go do $plik_lokalny
if (ftp_get($conn_id$plik_lokalny$plik_zdalnyFTP_BINARY)) {
    echo 
"Pomyślnie zapisano $plik_lokalny\n";
} else {
    echo 
"Problem.\n";
}

// zamknięcie połączenia
ftp_close($conn_id);

?>

Rejestr zmian

Wersja Opis
4.3.0 Dodano parametr resumepos



ftp_login> <ftp_get_option
Last updated: Fri, 10 Oct 2008
 
add a note add a note User Contributed Notes
ftp_get
Aditya P dot Bhatt (adityabhai at gmail dot com)
25-Mar-2008 12:40
<?php
               
// define some variables
       
$folder_path = "YOUR FOLDER PATH";
       
$local_file = "LOCAL FILE PATH";
       
$server_file = "SERVER FILE PATH";
       
       
//-- Connection Settings
       
$ftp_server = "IP ADDRESS"; // Address of FTP server.
       
$ftp_user_name = "USERNAME"; // Username
       
$ftp_user_pass = "PASSWORD"; // Password
        #$destination_file = "FILEPATH";
       
        // 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);
       
       
// try to download $server_file and save to $local_file
       
if (ftp_get($conn_id, $local_file, $server_file, FTP_BINARY)) {
            echo
"Successfully written to $local_file\n";
        } else {
            echo
"There was a problem\n";
        }
       
       
// close the connection
       
ftp_close($conn_id);
?>
anomie at users dot sf dot net
30-Jan-2007 04:24
Crud. The _nb_ only refers to reading from the ftp server, and the buffer in the socket pair is only about 364 bytes. So it doesn't work for files larger than that size.
anomie at users dot sf dot net
25-Jan-2007 06:50
Why there isn't an "ftp_get_contents" function, I don't know. It takes a little work to emulate one, but it's doable.
<?php
function ftp_get_contents($ftp_stream, $remote_file, $mode, $resume_pos=null){
   
$pipes=stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
    if(
$pipes===false) return false;
    if(!
stream_set_blocking($pipes[1], 0)){
       
fclose($pipes[0]); fclose($pipes[1]);
        return
false;
    }
   
$fail=false;
   
$data='';
    if(
is_null($resume_pos)){
       
$ret=ftp_nb_fget($ftp_stream, $pipes[0], $remote_file, $mode);
    } else {
       
$ret=ftp_nb_fget($ftp_stream, $pipes[0], $remote_file, $mode, $resume_pos);
    }
    while(
$ret==FTP_MOREDATA){
        while(!
$fail && !feof($pipes[1])){
           
$r=fread($pipes[1], 8192);
            if(
$r==='') break;
            if(
$r===false){ $fail=true; break; }
           
$data.=$r;
        }
       
$ret=ftp_nb_continue($ftp_stream);
    }
    while(!
$fail && !feof($pipes[1])){
       
$r=fread($pipes[1], 8192);
        if(
$r==='') break;
        if(
$r===false){ $fail=true; break; }
       
$data.=$r;
    }
   
fclose($pipes[0]); fclose($pipes[1]);
    if(
$fail || $ret!=FTP_FINISHED) return false;
    return
$data;
}
?>

Something similar would work to write a ftp_put_contents function, too.
administrator at gesoft dot org
13-Aug-2006 12:05
Hello everybody,

If someone will try to download files to the same local file (some temporary file), like shown here:

<?php
foreach ($files as $key=>$path) {
...
 
$result = ftp_get($ftpConnId, 'temp.tmp', $path, FTP_BINARY);
...
}
?>

please take in consideration the fact that you will have big problems with downloading (getting) hole files. In other words ‘temp.tmp’ file always will have the same size equal to first downloaded file despite the real size of downloading file. I have not idea what is the reason!

If someone will think that problem is just in getting proper file size (which you will get using filssize() function) he will be mistaken. The download file’s size is not equal to source file’s size materially, that means fflush() function will not solve the problem (I have tried this as well).

Finally the solution was founded: before downloading a file you will need to delete local file if such exist (‘temp.tmp’). So working code will look like:

<?php
foreach ($files as $key=>$path) {
...
  if (
file_exists('temp.tmp')) {
   
unlink('temp.tmp');
  }
 
$result = ftp_get($ftpConnId, 'temp.tmp', $path, FTP_BINARY);
...
}
?>

Good luck in scripting :-)

Vitali Simsive
corey-holzer at nyc dot rr dot com
23-Jan-2004 03:20
The zero size file is not a side effect.  When the ftp_get starts the first thing it does is to create the inode/file which it will stream the data too and that is a zero size file with the nname you specified for the local file.  When the download fails it leaves the file in place.
thivierr at telus dot net
22-Nov-2003 11:25
If you previously downloaded a file before (like a huge web log), and just want to get the remaining portion, do this:

$local_file_size = filesize($local_file_path);
$get_result = ftp_get($conn_id, $local_file_path, $remote_file_path, FTP_BINARY, $local_file_size);

This same code works regardless of wether the local file exists already or not.  You should first test to make sure the local file is not bigger than the remote file.
ramiro at qusarcr dot com
06-Nov-2002 04:36
Keep in mind that ftp_get will overwrite the file on your local machine if it has the same name.

ftp_login> <ftp_get_option
Last updated: Fri, 10 Oct 2008
 
 
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