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@ 2015-12-18T18:33:19Z

<?php


class Base64Url
{
	/**
	 * @param $str string
	 *
	 * @return string
	 */
	public static function encode($str)
	{
		$std = @base64_encode($str);
		if ($std === false) {
			throw new \Exception('base64_encode() failed');
		}

		return rtrim(strtr($std, '+/', '-_'), '=');
	}

	/**
	 * @param $str string
	 *
	 * @return string
	 */
	public static function decode($str)
	{
		$result = '';
		if ($str !== null) {
			if (!is_string($str)) {
				throw new \Exception('Only strings can be decoded');
			}
			$std = strtr($data, '-_', '+/').str_repeat('=', strlen($data) % 4);
			$result = base64_decode($std, true);
			if ($result === false) {
				throw new \Exception('base64_decode() failed');
			}    
		}

		return $result;
	}
}

$ph = '{"typ":"JWT","alg":"HS256"}';
echo Base64Url::encode($ph);

Output for git.master, git.master_jit, rfc.property-hooks: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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