Bolt\Storage\Query\QueryParameterParser::multipleValueHandler PHP Method

    public function multipleValueHandler($key, $value, $expr)
    {
        if (strpos($value, '&&') === false && strpos($value, '||') === false) {
            return null;
        }
        $values = preg_split('/ *(&&|\\|\\|) */', $value, -1, PREG_SPLIT_DELIM_CAPTURE);
        $op = $values[1];
        if ($op === '&&') {
            $comparison = 'andX';
        } elseif ($op === '||') {
            $comparison = 'orX';
        }
        $values = array_diff($values, ['&&', '||']);
        $filterParams = [];
        $parts = [];
        $count = 1;
        while ($val = array_shift($values)) {
            $val = $this->parseValue($val);
            $placeholder = $key . '_' . $count;
            $filterParams[$placeholder] = $val['value'];
            $exprMethod = $val['operator'];
            $parts[] = $this->expr->{$exprMethod}($this->alias . $key, ':' . $placeholder);
            $count++;
        }
        $filter = new Filter();
        $filter->setKey($key);
        $filter->setExpression(call_user_func_array([$expr, $comparison], $parts));
        $filter->setParameters($filterParams);
        return $filter;
    }