PHP code example of danc0 / dmerkle

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

danc0 / dmerkle example snippets

$transactions_to_hash = [
    ['foo'],
    ['bar']
];

use DMerkle\DMerkle;

$previous_block_hash = '123456bcdef';
$DMerkle = new DMerkle($previous_block_hash);
// Data from your queue in groups equal to your max block size
$transactions = [ ... ];

// Change the default block size
$DMerkle->max_block_size = 50;
// Pass a block of no more than 50 transactions
$DMerkle->setBlockData($transactions);
// Run the hashes
$DMerkle->runBlockCalculation();
// Get block data
$block_data = $DMerkle->createBlockData();

array(2) {
  ["block_data"]=>
  array(3) {
    ["header"]=>
    array(4) {
      ["block_id"]=>
      string(64) "5534f1313ea84c84faff9c99a766fb942864c86e53ce42be94f6a9bc7c322d43"
      ["root_hash"]=>
      string(64) "c12ab12acc2b1567e0c58809005d4e99b84f5a6c640dc3b6285fd70177242fc4"
      ["completed"]=>
      string(19) "2022-07-25 23:14:35"
      ["previous_block"]=>
      string(0) ""
    }
    ["base"]=>
    array(1) {
      [0]=>
      array(6) {
        [0]=>
        string(64) "31a76d7c1c7e8caffd45978dd1550716fded6121fe304172df75182b5888a49d"
        [1]=>
        string(64) "0b61a45894993b25785ea2dc0ff419db8c07eb626d05bf7c02268f536868f36c"
        [2]=>
        string(64) "ff87ae9ef3c9a0280c910142a2b7bde3413ffd0b21746f6e46359aa6ed67baea"
        [3]=>
        string(64) "a9b820c175525dd527b2076bb1be3c303ec2d05a7ab0f84c6af90d040ceb3230"
        [4]=>
        string(64) "80fe5885c37f06b5a8dc501323dc68299df99dda00ff3b04f2c9a9b7a37477bc"
        [5]=>
        string(64) "64755db4b6bdde855a6ddc641fb7b9e8d3238a7303da2cc25a6a4631304bd81b"
      }
    }
    ["full_tree"]=>
    array(4) {
      [0]=>
      array(6) {
        [0]=>
        string(64) "31a76d7c1c7e8caffd45978dd1550716fded6121fe304172df75182b5888a49d"
        [1]=>
        string(64) "0b61a45894993b25785ea2dc0ff419db8c07eb626d05bf7c02268f536868f36c"
        [2]=>
        string(64) "ff87ae9ef3c9a0280c910142a2b7bde3413ffd0b21746f6e46359aa6ed67baea"
        [3]=>
        string(64) "a9b820c175525dd527b2076bb1be3c303ec2d05a7ab0f84c6af90d040ceb3230"
        [4]=>
        string(64) "80fe5885c37f06b5a8dc501323dc68299df99dda00ff3b04f2c9a9b7a37477bc"
        [5]=>
        string(64) "64755db4b6bdde855a6ddc641fb7b9e8d3238a7303da2cc25a6a4631304bd81b"
      }
      [1]=>
      array(3) {
        [0]=>
        string(64) "56f1e19e51877ee8e398af8e83167390dec0552ef4449baf1de717bb7b22ab5d"
        [1]=>
        string(64) "33129c523c53ec276c6470284c94b417fc6af47d867fe3028bba05d7d4e2eb9c"
        [2]=>
        string(64) "1b54ea0fc30fd68b12e94fc8a8cf53a6fd15894feeea485c6f6a1c8496f5dbc9"
      }
      [2]=>
      array(2) {
        [0]=>
        string(64) "8afdae9451bde20d23ad26911acc7378d207c31fc430896c362e105b823c667e"
        [1]=>
        string(64) "c18204abc5b4e9bf5cc92c3c832ffc72a8d33afa5be72110969530ae142eacd6"
      }
      [3]=>
      array(1) {
        [0]=>
        string(64) "c12ab12acc2b1567e0c58809005d4e99b84f5a6c640dc3b6285fd70177242fc4"
      }
    }
  }
  ["block_hash"]=>
  string(64) "e1a822184c2f1909fcf50cc86706442c6705a57186a849cbb86559046c38b0be"
}

use DMerkle\DMerkle_Block;
$block_data_from_hashing = [ ... ]; // loaded from your db somewhere
$transaction_data = [ ... ]; // loaded from your db, data used when creating blocks
$root_hash = '...'; // loaded from your db


$DMerkle_Block = new DMerkle_Block($block_data_from_hashing);

$transaction_is_valid = $block->transactionIsPartOfBlock($transaction_data, $root_hash);

use DMerkle\DMerkle_Block;

$old_block = new DMerkle_Block($old_block_data);
$old_block_hash = $old_block->getBlockHash();

$current_block = new DMerkle_Block($current_block_data);

$old_block_hash_is_valid = $current_block->previousBlockHashIsValid($old_block_hash, $current_block_stored_hash)