web site file

<?php

$server = $_SERVER['SERVER_ADDR'];
$username = 'root';
$password = 'root';
$dbname = 'web-base';
$charset = 'utf8';

$connection = new mysqli($server, $username, $password, $dbname);

if($connection->connect_error){
	die("Ошибка соединения".$connection->connect_error);
}

if(!$connection->set_charset($charset)){
	echo "Ошибка установки кодировки UTF8";
}
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Тест</title>
</head>

<body>
<form action="files.php" method="post" enctype="multipart/form-data">
</form>
<?php
$id = $_GET[ 'id' ];
$card = $_GET[ 'card' ];
if (  !empty( $id && $card ))
{
    if($card == '1'){
          if($id == '1'){
                $query = $connection->query("SELECT * FROM images where id = 1");
                while($row = $query->fetch_assoc()){
                    $show_img = base64_encode($row['img']);?>
                    <img src="data:image/jpeg;base64, <?=$show_img ?>" alt="">
                <?php }
          }
          if($id == '2'){
                $query = $connection->query("SELECT * FROM images where id = 2");
                while($row = $query->fetch_assoc()){
                     $show_img = base64_encode($row['img']);?>
                     <img src="data:image/jpeg;base64, <?=$show_img ?>" alt="">
                <?php }
          }
    }
    elseif($card == '2'){
        if($id == '1'){
            $query = $connection->query("SELECT * FROM images where id = 1");
            while($row = $query->fetch_assoc()){
                $show_img = base64_encode($row['img']);?>
                <img src="data:image/jpeg;base64, <?=$show_img ?>" alt="">
            <?php }
        }
        if($id == '2'){
            $query = $connection->query("SELECT * FROM images where id = 2");
            while($row = $query->fetch_assoc()){
                $show_img = base64_encode($row['img']);?>
                <img src="data:image/jpeg;base64, <?=$show_img ?>" alt="">
            <?php }
        }
    }
}?>


</body>
</html>