Verification code

There is still one step left before the login is completed, the verification code. The verification code can effectively prevent malicious login.

Verification code

               
    
 
 
 
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LoginController.class.php

create($_POST,4)){ if($admin->login()){ $this->success('登录成功，跳转中...',U('Index/index')); }else{ $this->error('用户名或者密码错误！'); } }else{ $this->error($admin->getError()); } return; } $this->display(); } public function verify(){ $Verify = new \Think\Verify(); $Verify->length=4; $Verify->entry(); } }

In the member’s model layer AdminModel.class.php

password; $info=$this->where("username='$this->username'")->find(); if ($info){ if($info['password']=md5($password)){ return true; }else{ return false; } }else{ return false; } } public function verify($code){ $verify =new \Think\Verify(); return $verify->check($code,''); } }