| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace BitWasp\Bitcoin\Serializer\Block; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use BitWasp\Bitcoin\Block\BlockInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | use BitWasp\Bitcoin\Network\NetworkInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | use BitWasp\Bitcoin\Serializer\Types; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | use BitWasp\Buffertools\Buffer; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | use BitWasp\Buffertools\Buffertools; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | use BitWasp\Buffertools\Parser; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | class BitcoindBlockSerializer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |      * @var NetworkInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |     private $network; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |      * @var BlockSerializer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     private $blockSerializer; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |      * @param NetworkInterface $network | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |      * @param BlockSerializer $blockSerializer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 | 18 |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |     public function __construct(NetworkInterface $network, BlockSerializer $blockSerializer) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 | 18 |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 | 18 |  |         $this->blockSerializer = $blockSerializer; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 | 18 |  |         $this->magic = Types::bytestringle(4); | 
                            
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                | 32 |  |  |         $this->size = Types::uint32le(); | 
                            
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                | 33 |  |  |         $this->network = $network; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 36 | 18 |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 37 |  |  |      * @param BlockInterface $block | 
            
                                                                        
                            
            
                                    
            
            
                | 38 | 18 |  |      * @return \BitWasp\Buffertools\BufferInterface | 
            
                                                                        
                            
            
                                    
            
            
                | 39 | 18 |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 40 | 18 |  |     public function serialize(BlockInterface $block) | 
            
                                                                        
                            
            
                                    
            
            
                | 41 | 18 |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 42 |  |  |         $buffer = $this->blockSerializer->serialize($block); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |         $size = $buffer->getSize(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         return new Buffer( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |             Buffertools::flipBytes(pack("H*", $this->network->getNetMagicBytes())) . | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |             $this->size->write($size) . | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |             $buffer->getBinary() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 | 6 |  |         ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 | 6 |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 | 6 |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 | 6 |  |      * @param Parser $parser | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 | 6 |  |      * @return BlockInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 | 3 |  |      * @throws \BitWasp\Buffertools\Exceptions\ParserOutOfRange | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 | 3 |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |     public function fromParser(Parser $parser) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 | 6 |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |         /** @var Buffer $bytes */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 | 6 |  |         /** @var int|string $blockSize */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |         list ($bytes, $blockSize) = [$this->magic->read($parser), $this->size->read($parser)]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         if ($bytes->getHex() !== $this->network->getNetMagicBytes()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |             throw new \RuntimeException('Block version bytes did not match network'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |         return $this->blockSerializer->fromParser(new Parser($parser->readBytes($blockSize))); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 | 18 |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |      * @param \BitWasp\Buffertools\BufferInterface|string $data | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |      * @return BlockInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 | 18 |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 | 18 |  |     public function parse($data) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 | 6 |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |         return $this->fromParser(new Parser($data)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 76 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 77 |  |  |  | 
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: