PHP Editing of Files Via FTP

Question

Below is a script I am using to modify some files with placeholder strings. The .htaccess file sometimes gets truncated. It's about 2,712 bytes in size before editing and will vary in size after editing depending on the length of the domain name. When it gets truncated, it ends up around 1,400 bytes in size.

$d_parts = explode('.', $vals['domain']);
$ftpstring = 'ftp://' . $vals['username']
        . ':' . $vals['password']
        . '@' . $vals['ftp_server']
        . '/' . $vals['web_path']
;
$stream_context = stream_context_create(array('ftp' => array('overwrite' => true)));

$htaccess = file_get_contents($ftpstring . '.htaccess');
$htaccess = str_replace(array('{SUB}', '{DOMAIN}', '{TLD}'), $d_parts, $htaccess);
file_put_contents($ftpstring . '.htaccess', $htaccess, 0, $stream_context);

$constants = file_get_contents($ftpstring . 'constants.php');
$constants = str_replace('{CUST_ID}', $vals['cust_id'], $constants);
file_put_contents($ftpstring . 'constants.php', $constants, 0, $stream_context);

Is there a bug in file_get_contents(), str_replace(), or file_put_contents()? I have done quite a bit of searching and haven't found any reports of this happening for others.

Is there a better method of accomplishing this?

SOLUTION

Based on Wrikken's response, I started using file pointers with ftp_f(get|put), but ended up with zero length files being written back. I stopped using file pointers and switched to ftp_(get|put), and now everything seems to be working:

$search = array('{SUB}', '{DOMAIN}', '{TLD}', '{CUST_ID}');
$replace = explode('.', $vals['site_domain']);
$replace[] = $vals['cust_id'];
$tmpfname = tempnam(sys_get_temp_dir(), 'config');

foreach (array('.htaccess', 'constants.php') as $file_name) {
    $remote_file = $dest_path . $file_name;
    if (!@ftp_get($conn_id, $tmpfname, $remote_file, FTP_ASCII, 0)) {
        echo $php_errormsg;
    } else {
        $contents = file_get_contents($tmpfname);
        $contents = str_replace($search, $replace, $contents);
        file_put_contents($tmpfname, $contents);
        if (!@ftp_fput($conn_id, $remote_file, $tmpfname, FTP_ASCII, 0)) {
            echo $php_errormsg;
        }
    }
}

unlink($tmpfname);

@Pekka - It's simply missing the last part of the file. I have several lines of AddType declarations and truncation usually ends up in the middle of one of those lines. — Sonny
– Sonny, Commented Nov 4, 2010 at 17:06

Wrikken · Accepted Answer · 2010-11-04 17:06:16Z

2

With either passive of active ftp, I've never had much luck file using the file-family of functions with the ftp wrappers, usually with that kind of truncation problem. I usually just revert to the ftp functions with passive transfers, which do make it harder to switch, but work flawlessly for me.

answered Nov 4, 2010 at 17:06

Wrikken

70.8k8 gold badges99 silver badges136 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Sonny Over a year ago

Do you have example code for a get->edit->put type of process?

Wrikken Over a year ago

Using a tandem of tempnam for a temporary file, and ftp_fget, altering the data in your temporary file, and an ftp_fput when you're finished would do the trick.

Sonny Over a year ago

I updated my post. I am ending up with zero length files now.

Wrikken Over a year ago

You probably forgot to use fseek to set the pointer back to beginning in that case... (fseek($handle,0)), but indeed, ftp_put/get would also work.

Collectives™ on Stack Overflow

PHP Editing of Files Via FTP

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related