<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$sql = "SELECT id, firstname, lastname FROM MyGuests";
$result = $conn->query($sql);

  if ($result->num_rows > 0) {
   // output data of each row
     while($row = $result->fetch_assoc()) {
     echo "<br> custom1: ". $row["custom1"]. " custom2: ". $row["customer2"]. "cust3 " .            $row["custom3] . "<br>";
 }
} else {
 echo "0 results";
  }

$conn->close();
?>