mysql数据库未显示用户详细信息

Question

我想从数据库中选择数据并在我的网站上显示给登录的用户，但只有他的数据而不是其他任何人当我输入代码时它给出的错误通知很少我不知道如何解决它们请帮助我。谢谢

错误通知消息：

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21

Notice: Undefined index: username in C:\xampp\htdocs\mysql_login\user_details2.php on line 20

Notice: Undefined index: name in C:\xampp\htdocs\mysql_login\user_details2.php on line 21
Username    Name

这是我的 php 代码：

<?php
$con=mysqli_connect("localhost","root","123","login");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

$result = mysqli_query($con,"SELECT * FROM users");

echo "<table border='1'>
<tr>
<th>Username</th>
<th>Name</th>
</tr>";

while($row = mysqli_fetch_array($result))
  {
  echo "<tr>";
  echo "<td>" . $row['username'] . "</td>";
  echo "<td>" . $row['name'] . "</td>";
  echo "</tr>";
  }
echo "</table>";

mysqli_close($con);
?> 

Answer 1

尝试使用 mysqli_fetch_assoc($result) 或 mysqli_fetch_array($result, MYSQL_ASSOC) 代替 mysqli_fetch_array($result)