requires https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/php-sql-parser/php-sql-parser-20140108.zip src folder to be extracted under php_sql_parser folder
then roundcube data is transferred
if php_sql_parser/PHPSQLParser.php and cpanel_da_roundcube.php are not found, script just silently ignores conversion of roundcube data