            $pos = strpos($line, $match);

            if ($pos !== false) {
                $var = getvarname(strtok($field, '#'));
                if ($var != '[]') eval('$r' . $var . '=$block;');
            }
        }
    }

    return $r;
}
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.