php从数据库连接错误

Question

我收到了这个警告

  

警告：mysqli_connect（）:( HY000 / 1045）：第14行的C：\ wamp \ www \ S_WEB \ connection \ dbcon.php中的用户“root”@“localhost”（使用密码：YES）拒绝访问`

我的表users是：

我的查询user的代码是：

<?php

     //Connect to database

      $servername = "127.0.0.1";
      $username = "root";
      $password = "root";
      $dbname = "s_web";

// Create connection


$db = mysqli_connect('127.0.0.1','root','root','s_web')
 or die('Error connecting to MySQL server.');



$query = "SELECT * FROM user" ;
mysqli_query($db, $query) or die('Error querying database');


$result = mysqli_query($db, $query);
$row = mysqli_fetch_array($result);

while ($row = mysqli_fetch_array($result)) {
 echo $row['username'] . ' ' . $row['password'] . '<br />';
}

?>

我的问题是，当我尝试使用mysqli建立连接数据库时出现错误。 我在那里遇到很多错误。最近两天我试图解决我的问题，但我没有。

Answer 1

更新回答：

<?php

     //Connect to database

      $servername = "127.0.0.1";
      $username = "root";
      $password = "";
      $dbname = "s_web";

// Create connection


$db = mysqli_connect($servername,$username,$password,$dbname)
 or die('Error connecting to MySQL server.');


//as per error table user doesn't exist in the database, actual table name users
$query = "SELECT * FROM users" ;


//You're running same query twice that's why I commented one
//mysqli_query($db, $query) or die('Error querying database');


$result = mysqli_query($db, $query);
$row = mysqli_fetch_array($result);

while ($row = mysqli_fetch_array($result)) {
 echo $row['username'] . ' ' . $row['password'] . '<br />';
}

?>