blockchainethdev/rlp

Recursive Length Prefix Encoding in PHP.

0.3.4 2023-12-29 14:03 UTC

Requires

• php: ^7.1 | ^8.0
• ext-mbstring: *

Requires (Dev)

• phpunit/phpunit: ~7|~8.0

MIT

• sc0Vu

README

Recursive Length Prefix Encoding in PHP.

Install

Set minimum stability to dev

composer require blockchainethdev/rlp

Usage

RLP encode:

use Blockchainethdev\RLP\RLP;

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

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

RLP decode:

use Blockchainethdev\RLP\RLP;
use Blockchainethdev\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

Blockchainethdev\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 Blockchainethdev\RLP\RLP;

$rlp = new RLP;
$encoded = $rlp->encode(['blockchainethdev', '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 Blockchainethdev\RLP\RLP;
use Blockchainethdev\RLP\Types\Str;

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

// echo blockchainethdev
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