    public static function isJpg(&$pict)
    {
        $type = strtolower(substr(strrchr($pict, '.'), 1));
        if ($type == 'jpg') {
            return true;
        }
    }
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.