php-jwt 封装 JWT 加解密
最后更新于：2022-04-02 02:23:35
[TOC]
> [github](https://github.com/firebase/php-jwt)
> [JWT JSON Web Token 验证](../../../%E5%85%B6%E4%BB%96/JWTJSONWebToken%E9%AA%8C%E8%AF%81.md)
## 安装
```
composer require firebase/php-jwt
```
## 使用
```
use \Firebase\JWT\JWT;
$key = "example_key";
$token = array(
"iss" => "http://example.org", /* 签发人 */
"aud" => "http://example.com", /* 受众 */
"iat" => 1356999524, /* 签发时间 */
"nbf" => 1357000000 /* 生效时间 */
);
// encode
$jwt = JWT::encode($token, $key,'HS256'); //默认就是 'HS256'
echo $jwt.PHP_EOL; //eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJodHRwOlwvXC9leGFtcGxlLm9yZyIsImF1ZCI6Imh0dHA6XC9cL2V4YW1wbGUuY29tIiwiaWF0IjoxMzU2OTk5NTI0LCJuYmYiOjEzNTcwMDAwMDB9.KcNaeDRMPwkRHDHsuIh1L2B01VApiu3aTOkWplFjoYI
//decode
$decoded = JWT::decode($jwt, $key, array('HS256'));
$decoded_array = (array) $decoded;
print_r($decoded_array);
/**
* Array
(
[iss] => http://example.org
[aud] => http://example.com
[iat] => 1356999524
[nbf] => 1357000000
)
*/
/**
* 当签名服务器和验证服务器之间存在时钟偏差时，您可以添加一个可以解释的余地。建议这种回旋余地不应超过几分钟
*/
JWT::$leeway = 60; // $leeway in seconds
$decoded = JWT::decode($jwt, $key, array('HS256'));
```
';