rlp

Recursive Length Prefix Encoding in PHP.

Install

Set minimum stability to dev

composer require web3p/rlp

Usage

RLP encode:

use Web3p\RLP\RLP;

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

// to string, encoding: ascii utf8 hex
$encodedBuffer->toString($encoding);

RLP decode:

use Web3p\RLP\RLP;

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

// only accept 0x prefixed hex string
$decodedArray = $rlp->decode('0x' . $encodedBuffer->toString('hex'));

// show dog
echo $decodedArray[0]->toString('utf8');

API

Web3p\RLP\RLP

encode

Returns recursive length prefix encoding of given data.

encode(mixed $inputs)

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

Example

• Encode array of string.

use Web3p\RLP\RLP;

$rlp = new RLP;
$encodedBuffer = $rlp->encode(['web3p', 'ethereum', 'solidity']);
$encodedString = $encodedBuffer->toString('hex');

decode

Returns array recursive length prefix decoding of given data.

decode(string $input)

String input - recursive length prefix encoded string.

Example

• Decode recursive length prefix encoded string.

use Web3p\RLP\RLP;

$rlp = new RLP;
$encodedBuffer = $rlp->encode(['web3p', 'ethereum', 'solidity']);
$encodedString = $encodedBuffer->toString('hex');
$decodedArray = $rlp->decode('0x' . $encodedString);

// echo web3p
echo $decodedArray[0]->toString('utf8');

// echo ethereum
echo $decodedArray[1]->toString('utf8');

// echo solidity
echo $decodedArray[2]->toString('utf8');

Contribution

Thank you for considering to help out with the source code!

Pull requests and issues are always welcome.

License

MIT