FTP Download Script

[upgrader]

Hi I have this script which connects to a game server and downloads all the files in one directory, I have it on a cron job so it downloads them every day. But the problem is it downloads and overwrites all the files it has already downloaded, which consumes lots of bandwidth. Is there anyway I can make it only download files it hasn't downloaded before?

 

<?php
$ftp_server = "";
$uname = ""; //Enter your ftp username here.
$pwd = ""; //Enter your ftp password here.
$directory = ""; //Enter the dir of the files on the server here.

$connection = ftp_connect($ftp_server) or die("Error connecting to $ftp_server");
$login = ftp_login($connection, $uname, $pwd);
if (ftp_chdir($connection, $directory)) {
    echo "Changed directory to: " . ftp_pwd($connection) . "\n";
} else {
    echo "Error while changing directory!\n";
}

ftp_pasv($connection,FALSE);

$files = ftp_nlist($connection, ".");
foreach ($files as $file)
{
   $newFile = fopen($file, 'w');
echo ftp_fget($connection,$newFile,$file,FTP_BINARY);
   fclose($newFile);
}



ftp_close($connection);

?>

 

Thanks for any help,

 

upgrader

 

 

[jkewlo]

make it create a backup folder. or have it make a new folder that add's the data in there? that's what i would do

[upgrader]

make it create a backup folder. or have it make a new folder that add's the data in there? that's what i would do

 

How would I go about that, and is there not any other way? As I would rather have all the files in the same directory.

[lemmin]

if (file_exists($file)) ?

Or put all the file names into a table and check the table whenever you download it.

[upgrader]

Ok I have used if file exists. This is my new code:

 

<?php
$ftp_server = "";
$uname = ""; //Enter your ftp username here.
$pwd = ""; //Enter your ftp password here.
$directory = ""; //Enter the dir of the files on the server here.

$connection = ftp_connect($ftp_server) or die("Error connecting to $ftp_server");
$login = ftp_login($connection, $uname, $pwd);
if (ftp_chdir($connection, $directory)) {
    echo "Changed directory to: " . ftp_pwd($connection) . "\n";
} else { 
    echo "Error while changing directory!\n";
}

ftp_pasv($connection,FALSE);

$files = ftp_nlist($connection, ".");
foreach ($files as $file)
if (file_exists($file)) {
echo "$file already exists" ;
} else {
   $newFile = fopen($file, 'w');
   echo ftp_fget($connection,$newFile,$file,FTP_BINARY);
   fclose($newFile);
}



ftp_close($connection);

?>

 

How can I make the echo of existing files appear on separate lines, currently it spams it all as one line, I tried <br /> after the echo but it broke the script.

 

Thanks for any help

[mbeals]

since you are using cron, you must be on linux.  why not use wget with the --mirror option instead?  or better yet, if you have ssh access just use rsync.  Both would literally turn all of that code into a single line in your crontab

[upgrader]

I would rather do it with PHP first, so it can be used for people without SSH access.

[mbeals]

but wget will do it over ftp too

 

for the echo question, did you try

 

echo "$file already exists\n<br />" ;

[upgrader]

I will look into Rsync when I have this script sorted, as im interested in doing it with PHP anyway

 

I tried that but it doesn't work, the output is like this:

 

./filename.ext already exists/n<br />-

[mbeals]

sorry, didn't think about this being console output, so ditch the br.  The line break isn't working because you are using /n instead of \n. 

 

copy and paste this:

 

echo "$file already exists\n" ;

 

 

[upgrader]

Thank you that works

[upgrader]

Another Question:

 

When I run this script using: php ftpdl.php in SSH it works but if I just open it in my browser it doesn't work. Is there a way to get it working via a browser, it worked on one host I have but not the other -- not sure why.

[lemmin]

It doesn't work in the browser because the php script needs to be parsed by a server running php. If you have such a server on your local computer you can put it in the right place and use http://localhost to test it locally.

[upgrader]

Ok. Is there anyway I could write a script which would execute the download script when I open it in a browser?

[lemmin]

You could have a regular HTML file with some javascript that changes the page:

<html>
<body onload="self.location='http://server.com/download.php'">
</body>
</html>

[upgrader]

Surely thats the same thing as directly opening the page??

[lemmin]

Directly openning the page will only use the browser to parse the client side code. When you direct it to a different server it can run the php. It would be the same as just making a .url shortcut file, really. Maybe I'm not sure what you are trying to do.

[upgrader]

I will give it a try..

[upgrader]

Didn't work.

[lemmin]

Could you explain more about what you are trying to do?

[upgrader]

Have it so when I open the download.php page containing the script in the post above it executes it and downloads the files rather than me running the command php download.php in SSH.