Password_verify，PDO

Question

散列我的密码（b-crypt）有问题。用户注册成功完成此功能：$hashed = password_hash($password, PASSWORD_DEFAULT);。但我不知道如何实现这一行代码password_verify($password, $hashed_password)我的代码。

这是一类用户的一个片段：

class User{ 
    private $db; 
    public function __construct() { 
     $this->db = new Database(); 
    } 

public function getLoginUser($email, $password){ 
     $sql = "SELECT * FROM tbl_user WHERE email = :email AND password = :password LIMIT 1"; 
     $query = $this->db->pdo->prepare($sql); 
     $query->bindValue(':email', $email); 
     $query->bindValue(':password', $password); 
     $query->execute(); 
     $result = $query->fetch(PDO::FETCH_OBJ); 
     return $result; 
    } 

    public function userLogin($data){ 
     $email = $data['email']; 
     $password = $data['password']; 
     $chk_email = $this->emailCheck($email); 

     if ($email == "" OR $password == "") { 
      $msg = "<div class='alert alert-danger'><strong>Error! </strong>Field must not be Empty!</div>"; 
      return $msg; 
     } 

     if (filter_var($email, FILTER_VALIDATE_EMAIL) === false) { 
      $msg = "<div class='alert alert-danger'><strong>Error! </strong>The E-mail address is not valid!</div>"; 
      return $msg; 
     } 

     if ($chk_email == false) { 
      $msg = "<div class='alert alert-danger'><strong>Error! </strong>The E-mail address Not Exist!</div>"; 
      return $msg; 
     } 

     if (password_verify('password', $hashed)) { 
      echo 'Password is valid!'; 
     } else { 
      echo 'Invalid password.'; 
     } 

     $result = $this->getLoginUser($email, $password); 

     if ($result) { 
      Session::init(); 
      Session::set("login", true); 
      Session::set("id", $result->id); 
      Session::set("name", $result->name); 
      Session::set("username", $result->username); 
      Session::set("loginmsg", "<div class='alert alert-success'><strong>Success! </strong>You are Logged In!</div>"); 
      header("Location: index.php"); 
     } else { 
      $msg = "<div class='alert alert-danger'><strong>Error! </strong>Data not found!</div>"; 
      return $msg; 
     } 
    } 

，这是我的login.php与功能USERLOGIN（$ _ POST）; 。

<?php 
$user = new User(); 
if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['login'])) { 
    $usrLogin = $user->userLogin($_POST); 
} 

有人可以帮我解决这个问题吗？如果你能为我写这段代码（段），这将会很有帮助。

谢谢

Reegards！

Answer 1

您使用password_hash的散列密码存储到数据库

$hashed = password_hash($password, PASSWORD_DEFAULT); 

在您的登录页面，你需要根据用户的电子邮件从数据库中获取的旧哈希密码，并检查它反对公布密码一样这

$password = $_POST['password']; 
if (password_verify($password, $hashed_password_from_database)) { 
    // login 
} else { 
    // error login failed 
}