$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 "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>"     } } else {     echo "0 results" } $conn->close();

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