安装jwt的命令
composer require lcobucci/jwt 3.3
在extend/tools/jwt创建Token.php
<?php
namespace tools\jwt;
use Lcobucci\JWT\Builder;
use Lcobucci\JWT\Parser;
use Lcobucci\JWT\Signer\Hmac\Sha256;
use Lcobucci\JWT\ValidationData;
class Token
{
public static function createToken($uid = null)
{
$signer = new Sha256();//加密规则
$time = time();//当前时间
$token = (new Builder())
->issuedBy('teacher')//签发人
->canOnlyBeUsedBy('student')//接收人
->identifiedBy('MarsLei', true) //标题id
->issuedAt($time)//发出令牌的时间
->canOnlyBeUsedAfter($time) //生效时间(即时生效)
->expiresAt($time + 3600) //过期时间
->with('uid', $uid) //用户id
->sign($signer, 'my') //签名
->getToken(); //得到token
return (string)$token;
}
public static function verifyToken($token=null){
//检测是否接收到了token
if(empty($token)){
return 0;
}
//转化为可以验证的token
$token = (new Parser())->parse((string) $token);
//验证基本设置
$data = new ValidationData();
$data->setIssuer('teacher');
$data->setAudience('student');
$data->setId('MarsLei');
if(!$token->validate($data)){
return 0;
}
//验证签名
$signer = new Sha256();
if(!$token->verify($signer, 'my')){
return 0;
}
//验证通过，返回用户id
return $token->getClaim('uid');
}
}
调用Token
$token = Token::createToken($userInfo['id']); //生成token
//验证Token
$res = Token::verifyToken($token);
if ($res == 0) {
//验证失败
$this->error('token令牌失效', 'home/login/login');
}
