How to show total amount month and year wise PHP


database.php

<?php
    $url='localhost';
	$username='root';
	$password='';
	$conn=mysqli_connect($url,$username,$password,"student");
	if(!$conn){
	die('Could not Connect My Sql:' .mysql_error());
	}
	?>

index.php

<?php
$result = mysqli_query($conn,"select year(date) as year, month(date) as month, sum(paid) as total_amount
from amount_table
group by year(date), month(date)");
?>
<!DOCTYPE html>
<html lang="en">
<head>
  <title>How to show total amount month and year wise PHP</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>

<div class="container">
    <table class="table table-bordered">
			<thead>
			  <tr>
				<th>Year</th>
				<th>Month</th>
				<th>Amount</th>
			  </tr>
			</thead>
			<tbody>
<?php
	$i=0;
	while($row = mysqli_fetch_array($result)) {
	$monthNum  = $row["month"];
	$dateObj   = DateTime::createFromFormat('!m', $monthNum);
	$monthName = $dateObj->format('F');
?>
			  <tr>
				<td><?php echo $row["year"]; ?></td>
				<td><?php echo $monthName; ?></td>
				<td><?php echo $row["total_amount"]; ?></td>
			  </tr>
			  <?php
$i++;
}
?>
			</tbody>
  </table>
</div>

</body>
</html>