readDouble example

$pos = $this->pos;
        $val = $this->readLong();
        $this->pos = $pos;
        return $val;
    }

    /** * @return float|false */
    public function peekDouble() {
        $pos = $this->pos;
        $val = $this->readDouble();
        $this->pos = $pos;
        return $val;
    }

    /** * @return string */
    public function peekUTF() {
        $pos = $this->pos;
        $val = $this->readUTF();
        $this->pos = $pos;