使用php与ftp数据库连接代码

function dftp_connect($ftphost, $ftpuser, $ftppass, $ftppath, $ftpport = 21, $ftpssl = 0, $silent = 0) {
 global $ftp;
 @set_time_limit(0);
 $ftphost = wipespecial($ftphost);
 $ftpport = intval($ftpport);
 $ftpssl = intval($ftpssl);
 $ftp['timeout'] = intval($ftp['timeout']);
 $func = $ftpssl && function_exists('ftp_ssl_connect') ? 'ftp_ssl_connect' : 'ftp_connect';
 if($func == 'ftp_connect' && !function_exists('ftp_connect')) {
  if($silent) {
   return -4;
  } else {
   errorlog('FTP', "FTP not supported.", 0);
  }
 }
 if($ftp_conn_id = @$func($ftphost, $ftpport, 20)) {
  if($ftp['timeout'] && function_exists('ftp_set_option')) {
   @ftp_set_option($ftp_conn_id, FTP_TIMEOUT_SEC, $ftp['timeout']);
  }
  if(dftp_login($ftp_conn_id, $ftpuser, $ftppass)) {
   if($ftp['pasv']) {
    dftp_pasv($ftp_conn_id, TRUE);
   }
   if(dftp_chdir($ftp_conn_id, $ftppath)) {
    return $ftp_conn_id;
   } else {
    if($silent) {
     return -3;
    } else {
     errorlog('FTP', "Chdir '$ftppath' error.", 0);
    }
   }
  } else {
   if($silent) {
    return -2;
   } else {
    errorlog('FTP', '530 Not logged in.', 0);
   }
  }
 } else {
  if($silent) {
   return -1;
  } else {
   errorlog('FTP', "Couldn't connect to $ftphost:$ftpport.", 0);
  }
 }
 dftp_close($ftp_conn_id);
 return -1;
}
function dftp_mkdir($ftp_stream, $directory) {
 $directory = wipespecial($directory);
 return @ftp_mkdir($ftp_stream, $directory);
}
function dftp_rmdir($ftp_stream, $directory) {
 $directory = wipespecial($directory);
 return @ftp_rmdir($ftp_stream, $directory);
}
function dftp_put($ftp_stream, $remote_file, $local_file, $mode, $startpos = 0 ) {
 $remote_file = wipespecial($remote_file);
 $local_file = wipespecial($local_file);
 $mode = intval($mode);
 $startpos = intval($startpos);
 return @ftp_put($ftp_stream, $remote_file, $local_file, $mode, $startpos);
}
function dftp_size($ftp_stream, $remote_file) {
 $remote_file = wipespecial($remote_file);
 return @ftp_size($ftp_stream, $remote_file);
}
function dftp_close($ftp_stream) {
 return @ftp_close($ftp_stream);
}
function dftp_delete($ftp_stream, $path) {
 $path = wipespecial($path);
 return @ftp_delete($ftp_stream, $path);
}
function dftp_get($ftp_stream, $local_file, $remote_file, $mode, $resumepos = 0) {
 $remote_file = wipespecial($remote_file);
 $local_file = wipespecial($local_file);
 $mode = intval($mode);
 $resumepos = intval($resumepos);
 return @ftp_get($ftp_stream, $local_file, $remote_file, $mode, $resumepos);
}
function dftp_login($ftp_stream, $username, $password) {
 $username = wipespecial($username);
 $password = str_replace(array("n", "r"), array('', ''), $password);
 return @ftp_login($ftp_stream, $username, $password);
}
function dftp_pasv($ftp_stream, $pasv) {
 $pasv = intval($pasv);
 return @ftp_pasv($ftp_stream, $pasv);
}
function dftp_chdir($ftp_stream, $directory) {
 $directory = wipespecial($directory);
 return @ftp_chdir($ftp_stream, $directory);
}
function dftp_site($ftp_stream, $cmd) {
 $cmd = wipespecial($cmd);
 return @ftp_site($ftp_stream, $cmd);
}
function dftp_chmod($ftp_stream, $mode, $filename) {
 $mode = intval($mode);
 $filename = wipespecial($filename);
 if(function_exists('ftp_chmod')) {
  return @ftp_chmod($ftp_stream, $mode, $filename);
 } else {
  return dftp_site($ftp_stream, 'CHMOD '.$mode.' '.$filename);
 }
}