pocketmine\nbt\NBT::getInt PHP Метод

    public function getInt()
    {
        return $this->endianness === self::BIG_ENDIAN ? Binary::readInt($this->get(4)) : Binary::readLInt($this->get(4));
    }

 public function read(NBT $nbt)
 {
     $this->value = [];
     $size = $nbt->getInt();
     $value = unpack($nbt->endianness === NBT::LITTLE_ENDIAN ? "V*" : "N*", $nbt->get($size * 4));
     foreach ($value as $i => $v) {
         $this->value[$i - 1] = $v;
     }
 }