MessagePack\BufferUnpacker::unpack PHP Method

    public function unpack()
    {
        if (!isset($this->buffer[$this->offset])) {
            throw new InsufficientDataException(1, \strlen($this->buffer) - $this->offset);
        }
        $c = \ord($this->buffer[$this->offset]);
        ++$this->offset;
        // fixint
        if ($c <= 0x7f) {
            return $c;
        }
        // fixstr
        if ($c >= 0xa0 && $c <= 0xbf) {
            return $this->unpackStr($c & 0x1f);
        }
        // fixarray
        if ($c >= 0x90 && $c <= 0x9f) {
            return $this->unpackArray($c & 0xf);
        }
        // fixmap
        if ($c >= 0x80 && $c <= 0x8f) {
            return $this->unpackMap($c & 0xf);
        }
        // negfixint
        if ($c >= 0xe0) {
            return $c - 256;
        }
        switch ($c) {
            case 0xc0:
                return null;
            case 0xc2:
                return false;
            case 0xc3:
                return true;
                // MP_BIN
            // MP_BIN
            case 0xc4:
                return $this->unpackStr($this->unpackUint8());
            case 0xc5:
                return $this->unpackStr($this->unpackUint16());
            case 0xc6:
                return $this->unpackStr($this->unpackUint32());
                // MP_FLOAT
            // MP_FLOAT
            case 0xca:
                return $this->unpackFloat32();
            case 0xcb:
                return $this->unpackFloat64();
                // MP_UINT
            // MP_UINT
            case 0xcc:
                return $this->unpackUint8();
            case 0xcd:
                return $this->unpackUint16();
            case 0xce:
                return $this->unpackUint32();
            case 0xcf:
                return $this->unpackUint64();
                // MP_INT
            // MP_INT
            case 0xd0:
                return $this->unpackInt8();
            case 0xd1:
                return $this->unpackInt16();
            case 0xd2:
                return $this->unpackInt32();
            case 0xd3:
                return $this->unpackInt64();
                // MP_STR
            // MP_STR
            case 0xd9:
                return $this->unpackStr($this->unpackUint8());
            case 0xda:
                return $this->unpackStr($this->unpackUint16());
            case 0xdb:
                return $this->unpackStr($this->unpackUint32());
                // MP_ARRAY
            // MP_ARRAY
            case 0xdc:
                return $this->unpackArray($this->unpackUint16());
            case 0xdd:
                return $this->unpackArray($this->unpackUint32());
                // MP_MAP
            // MP_MAP
            case 0xde:
                return $this->unpackMap($this->unpackUint16());
            case 0xdf:
                return $this->unpackMap($this->unpackUint32());
                // MP_EXT
            // MP_EXT
            case 0xd4:
                return $this->unpackExt(1);
            case 0xd5:
                return $this->unpackExt(2);
            case 0xd6:
                return $this->unpackExt(4);
            case 0xd7:
                return $this->unpackExt(8);
            case 0xd8:
                return $this->unpackExt(16);
            case 0xc7:
                return $this->unpackExt($this->unpackUint8());
            case 0xc8:
                return $this->unpackExt($this->unpackUint16());
            case 0xc9:
                return $this->unpackExt($this->unpackUint32());
        }
        throw new UnpackingFailedException(\sprintf('Unknown code: 0x%x.', $c));
    }

 public function testBadKeyTypeIsIgnored()
 {
     $this->unpacker->reset("��

");
     // [[1, 2] => 0, 4 => 2]
     $raw = @$this->unpacker->unpack();
     $this->assertSame([4 => 2], $raw);
 }