src/Http/Http.php
public function put($key = null, $filter = true)
    {
        parse_str(file_get_contents("php://input"), $_PUT);

        if ($key == null) {
            return $_PUT;
        }

        return $this->filter($_PUT[$key], $filter);
    }
public function put($key = null, $filter = true)
    {
        parse_str(file_get_contents("php://input"), $_PUT);

        if ($key == null) {
            return $_PUT;
        }

        return $this->filter($_PUT[$key], $filter);
    }
HTTP PUT Request

@param string $key
@param bool   $filter

@return string|null