Code sharing for ThinkPHP to implement login and logout functions

This article mainly introduces the login and logout functions of ThinkPHP in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

check($yzm)){//调用check方法
  return true;
 }else{
  echo '验证码错误';
  exit();
 }
}

public function login(){
 if(!IS_POST){
  $this->display();
 }else{
  //若验证码验证通过
  if($this->checkyzm(I('post.yzm'))){
   $username=I('post.username');
   $user=D( ' user ' )->where(" username='$username' ")->find();
   //post过来的password拼接盐md5后密码=数据库的密码，则通过
   if(md5( I( ' post.password ' ) . $user[ ' salt ' ])===$user['password']{
    cookie('username' , $userp[ ' username ' ]);//写入cookie
    $this->redirect('/');//跳转到首页
   }else{
    echo '用户名或密码不对';
   }
  }
 }
}


/**V层
 * 退出登陆
 * 读取cookie $Think.cookie
 */
//若没有cookie数据
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{$Think.cookie.username}|
<退出
 


 /**
 * 退出方法
 * 1，cookie设为null，删除cookie
 * 2. 跳转到首页
 */
 public function logout(){
  cookie('username' , null);
  $this->redirect('/');
 }

 ?>}

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