警告:mysqli_query() 需要至少 2 个参数,其中 1 个已给定。为什么?

Warning: mysqli_query() expects at least 2 parameters, 1 given. Why?

它说其中一行是错误的,但我使用的是 mysqli 而不是 mysqli。有人可以帮忙吗?

<?php
$servername = "localhost";
$usernam = "id13913676_admin";
$password = "Benya12152003!";
$dbname = "id13913676_langswap";
$conn = mysqli_connect($servername, $usernam, $password, $dbname);
$query = "SELECT * FROM register";
$result = mysqli_query($query);

?>

改为$result = mysqli_query($conn, $query);添加连接变量