php - 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将其显示在我的网站上向登录的用户显示，但只有他的数据而不是其他人，当我输入代码时，它给出了一些错误通知，我不知道如何解决它们，请帮助我。谢谢

错误通知按摩:

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) 而不是 mysqli_fetch_array($result)