Try this
prepare("SELECT date, impressions, balance, username FROM reports WHERE username = '$username' and date between '$firstDay' AND '$lastDay'");
$stmt->execute();
$stmt->store_result();
$rows = $stmt->num_rows;
mysqli_stmt_bind_result($stmt,$date,$impressions,$balance,$username);
if ($rows > 0){
while (mysqli_stmt_fetch($stmt)) {
$ecpm_t3 = $balance*1000;
$ecpm3 = $ecpm_t3/$impressions;
$rate = number_format((float)$ecpm3, 2, '.', '');
echo"
$date |
$impressions |
$$rate |
$$balance |
";
}} else {
echo"
Not rows |
";
}
?>