Recursive Length Prefix Encoding in PHP.

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Details

github.com/kornrunner/rlp

Source

Installs: 24 014

Dependents: 1

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Forks: 23

0.3.6 2023-02-09 21:54 UTC

This package is auto-updated.

Last update: 2024-06-10 00:46:00 UTC


README

Recursive Length Prefix Encoding in PHP.

Install

Set minimum stability to dev

composer require kornrunner/rlp

Usage

RLP encode:

use kornrunner\RLP\RLP;

$rlp = new RLP;
// c483646f67
$encoded = $rlp->encode(['dog']);

// 83646f67
$encoded = $rlp->encode('dog');

RLP decode:

use kornrunner\RLP\RLP;
use kornrunner\RLP\Types\Str;

$rlp = new RLP;
$encoded = $rlp->encode(['dog']);

// only accept 0x prefixed hex string
$decoded = $rlp->decode('0x' . $encoded);

// show 646f67
echo $decoded[0];

// show dog
echo hex2bin($decoded[0]);

// or you can
echo Str::decodeHex($decoded[0]);

API

kornrunner\RLP\RLP

encode

Returns recursive length prefix encoding of given inputs.

encode(mixed $inputs)

Mixed inputs - array of string, integer or numeric string.

Note: output is not zero prefixed.

Example
  • Encode array of string.
use kornrunner\RLP\RLP;

$rlp = new RLP;
$encoded = $rlp->encode(['kornrunner', 'ethereum', 'solidity']);

decode

Returns array recursive length prefix decoding of given data.

decode(string $input)

String input - recursive length prefix encoded string.

Note: output is not zero prefixed.

Example
  • Decode recursive length prefix encoded string.
use kornrunner\RLP\RLP;
use kornrunner\RLP\Types\Str;

$rlp = new RLP;
$encoded = $rlp->encode(['kornrunner', 'ethereum', 'solidity']);
$decoded = $rlp->decode('0x' . $encoded);

// echo kornrunner
echo hex2bin($decoded[0]);

// echo ethereum
echo hex2bin($decoded[1]);

// echo solidity
echo hex2bin($decoded[2]);

// or you can
echo Str::decodeHex($decoded[0]);
echo Str::decodeHex($decoded[1]);
echo Str::decodeHex($decoded[2]);

License

MIT