//JS
const data = new FormData();
data.append('card', 1)
fetch('/../dblogic.php', {
method: 'POST',
body: data
})
//php
if (isset($_POST['card'])) {
$num = $_POST['card'];
mysqli_query($connect, "UPDATE my_table SET field = '$num' WHERE TOKEN = '$token' AND status = '0'");
}