function execute_backup($command) {
	$backup_options = get_option('dbmanager_options');
	check_backup_files();

	if( realpath( $backup_options['path'] ) === false ) {
		return sprintf( __( '%s is not a valid backup path', 'wp-dbmanager' ), stripslashes( $backup_options['path'] ) );
	} else if( dbmanager_is_valid_path( $backup_options['mysqldumppath'] ) === 0 ) {
		return sprintf( __( '%s is not a valid mysqldump path', 'wp-dbmanager' ), stripslashes( $backup_options['mysqldumppath'] ) );
	} else if( dbmanager_is_valid_path( $backup_options['mysqlpath'] ) === 0 ) {
		return sprintf( __( '%s is not a valid mysql path', 'wp-dbmanager' ), stripslashes( $backup_options['mysqlpath'] ) );
	}

	if(substr(PHP_OS, 0, 3) == 'WIN') {
		$writable_dir = $backup_options['path'];
		$tmpnam = $writable_dir.'/wp-dbmanager.bat';
		$fp = fopen($tmpnam, 'w');
		fwrite($fp, $command);
		fclose($fp);
		system($tmpnam.' > NUL', $error);
		unlink($tmpnam);
	} else {
		passthru($command, $error);
	}
	return $error;
}
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.