PHP code example of amashukov / rlp-php

1. Go to this page and download the library: Download amashukov/rlp-php 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/ */

amashukov / rlp-php example snippets


use Amashukov\Rlp\Rlp;

// Empty string.
Rlp::encode('');                              // 0x80

// Single byte < 0x80 is its own encoding.
Rlp::encode("\x7f");                          // 0x7f

// Short string (≤ 55 bytes).
Rlp::encode('dog');                           // 0x83 'd' 'o' 'g'

// Long string (> 55 bytes).
Rlp::encode(str_repeat('a', 56));             // 0xb8 0x38 'a' × 56

// Empty list.
Rlp::encode([]);                              // 0xc0

// Flat list of byte-strings.
Rlp::encode(['cat', 'dog']);                  // 0xc8 0x83 'cat' 0x83 'dog'

// Nested list.
Rlp::encode([[], [[]], [[], [[]]]]);          // 0xc7 0xc0 0xc1 0xc0 0xc3 0xc0 0xc1 0xc0


Rlp::encodeInt(0);                            // 0x80  (empty bytes)
Rlp::encodeInt(1);                            // 0x01
Rlp::encodeInt(127);                          // 0x7f
Rlp::encodeInt(128);                          // 0x81 0x80
Rlp::encodeInt(1024);                         // 0x82 0x04 0x00
Rlp::encodeInt('1000000000000000000');        // big-int via decimal string (1 ETH in wei)


Rlp::decode("\x80");                          // ''
Rlp::decode("\x83dog");                       // 'dog'
Rlp::decode("\xc8\x83cat\x83dog");            // ['cat', 'dog']
Rlp::decode("\xc7\xc0\xc1\xc0\xc3\xc0\xc1\xc0"); // [[], [[]], [[], [[]]]]


$stream    = Rlp::encode('first') . Rlp::encode('second');
[$first,  $consumed]  = Rlp::decodeStream($stream, 0);
[$second, $consumed2] = Rlp::decodeStream($stream, $consumed);
// $first = 'first', $second = 'second'