| 1234567891011121314151617181920212223242526272829303132333435363738 | <?phpnamespace app\common\util;class Encryption{    /**     * 生成token     * @param int $id     * @return string     */    public function createToken(int $id): string    {        $expireDays = 7;//过期时间,单位天        //token:  md5([用户名][当前时间])|[用户id]|[过期时间]        $time = (time() + 86400 * $expireDays);        $signKey = env('TOKEN_KEY');        $sign = md5($signKey . $id . $time);//        var_dump($signKey);        return base64_encode($sign . "|" . $id . "|" . $time);    }    /**     * 获取token     * @return array|mixed|string|null     */    public function getToken(): mixed    {        $token = null;        if (!$token) {            $token = request()->header("token");        }        if (!$token) {            $token = input("token");        }        return $token;    }}
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