How to give the user unlimited views - php

Question

I'm trying to give the user an unlimited option in my database but I'm not sure how to do this. I have set the default as 10 because they have 10 views and for each page they are viewing, it will count down. Once it reaches 0, the user will have to register again unless they have made payment but not sure how to make the views unlimited
I'm confused as to what to do here because I can't find any option to set the views as unlimited.
<?php
include_once 'navbar.php';
if(!$_SESSION['u_uid']) {
header("Location: index.php?medical_subscriptionplan_process=notlogin");
exit();
} else {
include_once 'includes/dbh.php';
if(isset($_POST['submit'])) {
$views = strip_tags($_POST['subscriptionplan']);
if ($views == '') {
header("Location: index.php?medical_subscriptionplan_process=emptied");
exit();
} else {
if ($views == '10_views') {
$views = 10;
$sql = "UPDATE users
SET views = ?
WHERE user_uid = ?;
";
$stmt = mysqli_stmt_init($conn);
if(!mysqli_stmt_prepare($stmt, $sql)) {
echo "SQL error";
} else {
mysqli_stmt_bind_param($stmt, "is", $views, $_SESSION['u_uid']);
mysqli_stmt_execute($stmt);
}
} else {
if ($views == '100_views') {
$views = 100;
$sql = "UPDATE users
SET views = ?
WHERE user_uid = ?;";
$stmt = mysqli_stmt_init($conn);
if(!mysqli_stmt_prepare($stmt, $sql)) {
echo "SQL error";
} else {
mysqli_stmt_bind_param($stmt, "is", $views, $_SESSION['u_uid']);
mysqli_stmt_execute($stmt);
}
} else {
if ($views == 'unlimited') {
$views = NULL;
$sql = "UPDATE users
SET views = ?
WHERE user_uid = ?;";
$stmt = mysqli_stmt_init($conn);
if(!mysqli_stmt_prepare($stmt, $sql)) {
echo "SQL error";
} else {
mysqli_stmt_bind_param($stmt, "is", $views, $_SESSION['u_uid']);
mysqli_stmt_execute($stmt);
}
}
}
}
header("Location: index.php?medical_subscriptionplan_process=sucess");
}
}
}

Answer 1

To indicate unlimited views in your database, you just need to add -1 in your database view column otherwise set it with some other positive integer, then check for the condition,
if (views == -1){
// user has paid for unlimited view
}

Answer 2

you can add flag (just like "is_unlimited") in database to check customers access limit
if($isunlmited==1){
//always allow access
}else{
//check for 10_views limit
}