require './JWT.php';
$key = 'sign key';
$jwt = JWT::encode([
    'iss' => 'https://api.example.com',
    'iat' => time(),
    'exp' => time() + 3600,
    'uid' => 1,
    'name' => 'Grass'
], $key);
echo "jwt encode:$jwt\n\n";

require './JWT.php';
$key = 'sign key';
try {
    $payload = JWT::decode($jwt, $key);
    echo "jwt decode:";
    print_r($payload);
} catch(Excpetion $e) {
    var_dump("decode error:" . $e->getMessage() . '(' . $e->getCode() . ')');
}