验证码相关组件
webman/captcha
项目地址 https://github.com/webman-php/captcha
安装
composer require webman/captcha使用
建立文件 app/controller/LoginController.php
<?php
namespace app\controller;
use support\Request;
use Webman\Captcha\CaptchaBuilder;
class LoginController
{
/**
* 测试页面
*/
public function index(Request $request)
{
return view('login/index');
}
/**
* 输出验证码图像
*/
public function captcha(Request $request)
{
// 初始化验证码类
$builder = new CaptchaBuilder;
// 生成验证码
$builder->build();
// 将验证码的值存储到session中
$request->session()->set('captcha', strtolower($builder->getPhrase()));
// 获得验证码图片二进制数据
$img_content = $builder->get();
// 输出验证码二进制数据
return response($img_content, 200, ['Content-Type' => 'image/jpeg']);
}
/**
* 检查验证码
*/
public function check(Request $request)
{
// 获取post请求中的captcha字段
$captcha = $request->post('captcha');
// 对比session中的captcha值
if (strtolower($captcha) !== $request->session()->get('captcha')) {
return json(['code' => 400, 'msg' => '输入的验证码不正确']);
}
return json(['code' => 0, 'msg' => 'ok']);
}
}建立模版文件app/view/login/index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>验证码测试</title>
</head>
<body>
<form method="post" action="/login/check">
<img src="/login/captcha" /><br>
<input type="text" name="captcha" />
<input type="submit" value="提交" />
</form>
</body>
</html>进入页面http://127.0.0.1:8787/login 界面类似如下：
常见参数设置
/**
* 输出验证码图像
*/
public function captcha(Request $request)
{
$builder = new PhraseBuilder(4, 'abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ');
$captcha = new Captcha(null, $builder);
$captcha->build();
$request->session()->set('join', strtolower($captcha->getPhrase()));
$img_content = $captcha->get();
return response($img_content, 200, ['Content-Type' => 'image/jpeg']);
}更多接口及参数参考 https://github.com/webman-php/captcha