initial database output, probably doesn't work

var/www/usernameSearch.php

@@ -21,12 +21,21 @@ $conn = new mysqli($servername, $username, $password);
 if ($conn->connect_error) {
     die("Connection failed: " . $conn->connect_error);
 }
-echo "Connected successfully";
 
 echo "<br>";
 $query = "Select * from contacts where username = {$username}";
+mysqli_query($db, $query) or die('Error querying database.');
+
+$result = mysqli_query($db, $query0);
+$row = mysqli_fetch_array($result);
+
+while ($row = mysqli_fetch_array($result)) {
+        echo $row['username'] . ': ' . $row['fname'] . ' ' . $row['lnam'] .'<br />';
+}
 
 print $query;
+
+mysqli_close($db);
 ?>
 
 </body>