验证码
生成验证码
namespace app\web\controller;
use Timo\Captcha;
use Timo\Core\Controller;
use Timo\Core\Session;
class passport extends Controller
{
public function captcha()
{
$captcha = new Captcha();
Session::set('captcha', $captcha->getCode());
$captcha->getImage();
}
}
显示验证码
模版页面，比如登录页面
<html>
<head>
<meta charset="UTF-8">
<title>登录</title>
</head>
<body>
<img src="<?= $this->link('passport/captcha'); ?>" />
</body>
</html>
验证验证码正确性
namespace app\web\controller;
use Timo\Core\App;
use Timo\Core\Controller;
use Timo\Core\Request;
use Timo\Http\Response;
use Timo\Core\Session;
class User extends Controller
{
/**
* @method POST
*/
public function login()
{
$code = Request::post('code', '');
// 验证码错误
if ($code != Session::get('captcha')) {
Response::type('json')->send(App::result(1, '验证码错误'));
return;
}
//验证码正确，进行登录操作
$this->display();
}
}
生成base64图片
如果是前后端分离，我们一般不使用session，那该怎么办呢？这里给了一个解决方案，使用Aes将验证码加密并设置过期时间，如：60s，生成token参数并返回给前端，前端在提交登录请求时带上这个Token
namespace app\web\controller;
use Timo\Captcha;
use Timo\Core\App;
use Timo\Core\Controller;
class passport extends Controller
{
/**
* 获取验证码图片
*/
public function captcha()
{
$captcha = new Captcha();
$code = $captcha->getCode();
$token = AesEncrypt::builder()->expire(60)->encrypt($code);
return App::result(0, 'ok', [
'token' => $token,
'image' => $captcha->getBase64Image(),
]);
}
}
