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.history/app/controller/login_20221223195750.php

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+<?php
+
+namespace app\controller;
+use support\Request;
+use Webman\Captcha\CaptchaBuilder;
+use support\View;
+
+class login
+{
+    public function index(Request $request)
+    {
+        $msg=$request->get('msg', '');
+        $to=$request->get('to', '/');
+        View::assign('msg', $msg);
+        View::assign('to', $to);
+        return view('login');
+    }
+    
+    public function check(Request $request)
+    {
+        $captcha = $request->post('code','0');
+        // 对比session中的captcha值
+        if (strtolower($captcha) !== $request->session()->get('captcha')) {
+            return redirect('/login?msg=验证码错误');
+        }
+        $name = $request->post('name','0');
+        $password = $request->post('password','0');
+        if($name==getenv('admin') && $password==getenv('password')){
+            $session = $request->session();
+            $session->set('userinfo', 'admin');
+            $to = $request->post('to','/admin');
+            return redirect("$to");
+        }else{
+            return redirect('/login?msg=账号密码错误');
+        }
+
+
+        return response('错误');
+    }
+
+    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']);
+    }
+
+}