Question and Answer item---PHP Verification after an asynchronous check of the account password

When doing a login, it is necessary to verify the correctness of the account and password by using PHP after the asynchronous check.

PHP Check account password:

 Public functionLogin () {if(!is_post) {Echo"Page does not exist";$this->redirect (' index '); die();}; $username= I (' Post.username '); $pwd= I (' Post.password ', ' ', ' MD5 '); $code= I (' Post.code '); $obj=New\think\verify (); if(!$obj->check ($code)){        $this->error (' captcha error '));    }; //verify your account and password    $where=Array(        ' Account ' =$username    ); $result= M (' admin ')->where ($where),find (); if(!$result||$result[' password ']! =$pwd){         $this->error (' Account or password error '));    }; if($user[' Lock ']){        $this->error (' account is locked ');    }; $data=Array(        ' id ' =$result[' ID '], ' logintime ' = Time(), ' loginip ' =get_client_ip ()); M (' admin ')->save ($data); //Save SessionSession (' UID ',$result[' ID ']); Session (' UID ',$result[' Account ']); Session (' Logintime ',Date(' Y-m-d h:i ',$result[' Logintime '])); Session (' Loginip ',$result[' Loginip ']); $this->redirect ('/admin/index ', ' ', 2, ' page is jumping in ... '));}

Question and Answer item---PHP Verification after an asynchronous check of the account password