php ftp檔案上傳

<?php

function copyViaFtpRecursively($uploadLocation, $previewPath, $remoteDirectory, $ftpType)
        {
        $errorMessage = '';

        $connectionId = getFtpConnection($uploadLocation['host'], $uploadLocation['username'], $uploadLocation['password'], $uploadLocation['port']);
        switch($ftpType)
                {
                case 'active':
                        ftp_pasv($connectionId, False);
                        break;
                case 'passive':
                        ftp_pasv($connectionId, True);
                        break;
                }

        $baseDirectory = $uploadLocation['baseDirectory'];
        if(substr($baseDirectory, strlen($baseDirectory) - 1, 1) != '/')
                {
                $baseDirectory .= '/';
                }
        ftp_mkdir($connectionId, $baseDirectory); // No point showing an error message if the directory exists (most likely cause of error) because it will exist (at least) after the first time.

        $remoteBaseDirectory = $baseDirectory.$remoteDirectory;
        if(substr($remoteBaseDirectory, strlen($remoteBaseDirectory) - 1, 1) == '/')
                {
                $remoteBaseDirectory = substr($remoteBaseDirectory, 0, strlen($remoteBaseDirectory) - 1);
                }

        $remoteBaseDirectory .= '/';
        $errorMessage .= copyFileViaFtp($previewPath, $remoteBaseDirectory, $connectionId);

        ftp_close($connectionId);

        $errorHtml = '';
        if($errorMessage)
                {
                $errorHtml = nl2br($errorMessage);
                }
        return $errorHtml;
        }

function getFtpConnection($host, $username, $password, $port)
        {
        $connectionId = ftp_connect($host);
        if(!@ftp_login($connectionId, $username, $password))
                {
                webServiceError('FTP error. Unable to connect to "'.$host.'" with username "'.$username.'"');
                }
        return $connectionId;
        }

function copyFileViaFtp($sourcePath, $destinationPath, $connectionId)
        {
        $errorMessage = '';
        $sourcePath = str_replace(" ", "-", $sourcePath);
        $destinationPath = str_replace(" ", "-", $destinationPath);
        if(!ftp_mkdir($connectionId, $destinationPath))
                {
                $errorMessage .= "Unable to create directory at ".$destinationPath." (it may already exist) ";
                }
        ftp_site($connectionId, 'CHMOD 0777 '.$destinationPath);
        ftp_chdir($connectionId, $destinationPath);
        //print $sourcePath.' to '.$destinationPath."<br />";
        if(is_dir($sourcePath))
                {
                chdir($sourcePath);
                $handle=opendir('.');
                while(($file = readdir($handle))!==false)
                        {
                        if(($file != ".") && ($file != ".."))
                                {
                                if(is_dir($file))
                                        {
                                        $errorMessage .= copyFileViaFtp($sourcePath.DIRECTORY_SEPARATOR.$file, $file, $connectionId);
                                        chdir($sourcePath);
                                        if(!ftp_cdup($connectionId))
                                                {
                                                $errorMessage .= "Unable to ftp_cdup. ";
                                                }
                                        }
                                else
                                        {
                                        if(substr($file, strlen($file) - 4, 4) != ".zip")
                                                {
                                                $fp = fopen($file,"r");
                                                if(!ftp_fput($connectionId, str_replace(" ", "_", $file), $fp, FTP_BINARY))
                                                        {
                                                        $errorMessage .= "Unable to ftp_fput(). ";
                                                        }
                                                ftp_site($connectionId, 'CHMOD 0755 '.str_replace(" ", "_", $file));
                                                }
                                        }
                                }
                        }
                closedir($handle);
                }

        return $errorMessage;
        }