mysqli count down

                                    <?php 
include("php/db_connect.php");

//TODAY'S DATE
$today = time();

//FETCHES DATE AND TIME FOR THE EVENT FROM DATABASE
$sql = "SELECT * FROM countdown";

$result = mysql_query($sql) or die(mysql_error());

$date = mysql_fetch_array( $result );


//CALCULATES SECONDS UNTIL THE EVENT
$remaining = $date['date'] - $today;

//CALCULATE DAYS UNTIL THE EVENT
$days_remaining = floor($remaining / 86400);

echo "<div class='countdown'> $days_remaining days until event</div>";

?>

                                    //CALCULATES SECONDS UNTIL THE EVENT
$remaining = $date['date'] - $today;