MySQLi issue: connecting but query not working - php

Question

so i'm not sure what the issue is but i'm pretty basic with mysql and i'm still learning. However I have been searching on the internet for about two hours now and I cant figure out what i've done wrong.
<?php
$id = 0;
// Create connection
$conn = new mysqli($servername, $dbname, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed" . $conn->connect_error);
}
$user_qry = "SELECT * FROM users WHERE id = $id";
$result = $conn->query($user_qry);
echo("<pre>");
print_r($result);
$conn->close();
?>
I am not receiving any connection error, but i'm

Answer 1

You have to fetch the result after executing the query:
$result = $conn->query($user_qry);
while ($row = $result->fetch_assoc()) {
print_r($row);
}
Regarding comment, stolen from another Stack Overflow post:
$result = $conn->query($user_qry)
if (!$result) {
throw new Exception("Database Error [{$this->database->errno}] {$this->database->error}");
}

Answer 2

In your connection, make sure you have selected a database name
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$conn->select_db('test');
And one more thing, to see what is the error you should enable display_errors = On in php.ini