Question

好吧，我的登录代码有点麻烦。所有工作都很棒，但是当我试图从我的用户那里获取行时，它会显示第一个用户的行（我的意思是信息）关于用户名，密码，电子邮件，...）。

public function login($username, $password){
    global $pdo;

    $query = $pdo->prepare("SELECT * FROM users WHERE username = ? AND password = ?");
    $query->bindValue(1, $username);
    $query->bindValue(2, $password);

    $query->execute();

    $result = $query->rowCount();

    if($result === 1){
    return true;

    } else {
    return false;
     }     
  }

我不能使用mysql_result，但我怎么能这样做呢？

 function user_id_from_username($username){
  return mysql_result(mysql_query("SELECT user_id FROM users WHERE username = $username"), 0, 'user_id');   
}

function login($username, $password){
  $user_id = user_id_from_username($username);

  return (mysql_result(mysql_query("SELECT COUNT(user_id) FROM users WHERE username = $username AND password = $password "),0) == 1)? $user_id : false;
}

对不起我的englsih ^^

Answer 1

public function login($username, $password){
    global $pdo;

    $query = $pdo->prepare("SELECT id FROM users WHERE username = ? AND password = ?");
    $query->execute(array($username, $password));
    return $query->fetchColumn();
}

PDO获取user_id

1 个答案: