Parse error: syntax error, unexpected T_PUBLIC, expecting T_CLASS in includes\database\database.inc on line 1062

Parse error: syntax error, unexpected T_PUBLIC, expecting T_CLASS in C:\XAMPP\htdocs\openpublic\includes\database\database.inc on line 1062

That line equates to:
abstract public function queryRange($query, $from, $count, array $args = array(), array $options = array());

How do I fix this error?

Thanks for all suggestions,

Alec Taylor