pocketmine\utils\Binary::readMetadata PHP Méthode

    public static function readMetadata($value, $types = false)
    {
        $offset = 0;
        $m = [];
        $b = ord($value[$offset]);
        ++$offset;
        while ($b !== 127 and isset($value[$offset])) {
            $bottom = $b & 0x1f;
            $type = $b >> 5;
            switch ($type) {
                case Entity::DATA_TYPE_BYTE:
                    $r = self::readByte($value[$offset]);
                    ++$offset;
                    break;
                case Entity::DATA_TYPE_SHORT:
                    $r = self::readLShort(substr($value, $offset, 2));
                    $offset += 2;
                    break;
                case Entity::DATA_TYPE_INT:
                    $r = self::readLInt(substr($value, $offset, 4));
                    $offset += 4;
                    break;
                case Entity::DATA_TYPE_FLOAT:
                    $r = self::readLFloat(substr($value, $offset, 4));
                    $offset += 4;
                    break;
                case Entity::DATA_TYPE_STRING:
                    $len = self::readLShort(substr($value, $offset, 2));
                    $offset += 2;
                    $r = substr($value, $offset, $len);
                    $offset += $len;
                    break;
                case Entity::DATA_TYPE_SLOT:
                    $r = [];
                    $r[] = self::readLShort(substr($value, $offset, 2));
                    $offset += 2;
                    $r[] = ord($value[$offset]);
                    ++$offset;
                    $r[] = self::readLShort(substr($value, $offset, 2));
                    $offset += 2;
                    break;
                case Entity::DATA_TYPE_POS:
                    $r = [];
                    for ($i = 0; $i < 3; ++$i) {
                        $r[] = self::readLInt(substr($value, $offset, 4));
                        $offset += 4;
                    }
                    break;
                case Entity::DATA_TYPE_LONG:
                    $r = self::readLLong(substr($value, $offset, 4));
                    $offset += 8;
                    break;
                default:
                    return [];
            }
            if ($types === true) {
                $m[$bottom] = [$r, $type];
            } else {
                $m[$bottom] = $r;
            }
            $b = ord($value[$offset]);
            ++$offset;
        }
        return $m;
    }