README

Base64 encoder/decoder with URL safe alphabet (base64url).

Modified Base64 with URL (and filename) safe alphabet, where the '+' and '/' characters of standard Base64 are respectively replaced by '-' and '_', and the padding '=' signs are omitted.

See base64url reference in RFC 4648.

Given the example input ????SlashAndPlus>>>, standard base64 encoded result equals to Pz8/P1NsYXNoQW5kUGx1cz4+Pg==, where base64url version produces Pz8_P1NsYXNoQW5kUGx1cz4-Pg.

Requirements

The library requires PHP 5.6 or above for basic usage.

Installation

The preferred way to install this library is through Composer. To install the latest version, run:

composer require olegf13/base64url

Basic usage

<?php
use Olegf13\Base64URL;

$inputString = '????SlashAndPlus>>>';
$encodedString = Base64URL::encode($inputString);
echo $encodedString, \PHP_EOL; // "Pz8_P1NsYXNoQW5kUGx1cz4-Pg"
echo Base64URL::decode($encodedString), \PHP_EOL; // "????SlashAndPlus>>>" 

License

This library is licensed under the MIT License - see the LICENSE file for details.