PHP code example of jamielsharief / blockchain

1. Go to this page and download the library: Download jamielsharief/blockchain library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

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

jamielsharief / blockchain example snippets


$ cd blockchain-demo
$ composer install --no-dev


$blockchain = new Blockchain('customer-payments', __DIR__ . '/data/blockchains', [
    'difficulty' => 4, // set to 0 to disable proof of work
    'lookback' => 10, // number of Blocks to look back for duplicate transactions
    'version' => 1
]);


$transaction = new Transaction([
    'date' => '2020-10-27',
    'to' => 'Bob',
    'from' => 'Tony',
    'amount'=> 500
]);


$block = new Block();
$block->add($transaction);


$blockchain->insert($block);


$block = $blockchain->get(4);
/*
{
    "hash": "0000a1b9dc3c28e3deacf1e862fd299fc7e29637da1c6c847e158141b8ac82cd",
    "version": 1,
    "previousHash": "000048cf5816b30cfb1b4fcf091fd801bd5ba9722a94fb42424df48a7d141fcc",
    "merkleRoot": "2924811dad7aebcc1772414d4296af5e21f636570c825dc8db22768660e92446",
    "timestamp": 1604053905,
    "difficulty": 4,
    "nonce": 116249,
    "index": 4,
    "noTransactions": 1,
    "transactions": [
        {
            "hash": "aa2c26771ca48904af0a5c2924ba8cebfd2bd37a6396a55db7d6939cb158a8dc",
            "data": {
                "date": "2020-10-30 22:31:45",
                "to": "2e6c1c401c5233c5b4e5f8b31938188f1375c4cc",
                "from": "f73c557f3c50b8be433a7a32dfcdd4d236e7ce23",
                "amount": 24087
            }
        }
    ]
}
*/


$block = $blockchain->find('0000d64537ceca1e65f5dca51bed677c6c6a5665b21725ef87dd6da21994e09c');


$block = $blockchain->last(); // the last Block


$blockchain->count();


$list = $blockchain->list(); // defaults to 10
/*
Array
(
    [9] => 0000b08e7e34f3cafb35602123d3aa18416d2279d36ab702fa9feac8758f6f66
    [8] => 0000963bc54ec3dba730e186bbddd03bf754117057b6d534a4c08610052b5c12
    [7] => 0000e042bdd2208d8187d6166dfb2f4cc9851d8a256178460f9daab56224f9f2
    [6] => 00008e61f6338138705ad6a389e0149e872c60839c5a638efc5cc44953c3820e
    [5] => 00005d7994266b55b1c48ceb79f59bc5fe9d786ab672417a6abba2db3f47a558
    [4] => 0000807d375c5fbe63f13445cec81abaf132eec8fb0f04bf7de8a68c29d173eb
    [3] => 0000fb7f973b48a0a928f190c843820b4bb91ba305330f702035b8d4dc64003f
    [2] => 000043adb9258af0b5b564e96ca20ed6709e4b3ebb84498d1a334b5a185cd788
    [1] => 0000d14502ac90c9047f3f43c96678dc4329db98f9e94c775f72a27d54820e87
    [0] => 0000a543c66f641c0998711f71afe2393ec3ed1b6ecefe979873f1ae4e5c15d2
)
*/


$list = $blockchain->list(10000);


foreach($blockchain->all() as $block){
    $transactions = $block->transactions;
}


$blockchain->validate();

bash
$ php demo.php