function curPage()
{
    parse_str(substr($_SERVER["REQUEST_URI"], strpos($_SERVER["REQUEST_URI"], "?")+1), $result);
    return $result['page'];
}
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.