Wallos/endpoints/settings/remove_background.php

<?php
require_once '../../includes/connect_endpoint.php';
require_once '../../includes/validate_endpoint.php';

$postData = file_get_contents("php://input");
$data = json_decode($postData, true);

$remove_background = $data['value'];

// Validate input
if (!isset($remove_background) || !is_bool($remove_background)) {
    die(json_encode([
        "success" => false,
        "message" => translate("error", $i18n)
    ]));
}

$stmt = $db->prepare('UPDATE settings SET remove_background = :remove_background WHERE user_id = :userId');
$stmt->bindParam(':remove_background', $remove_background, SQLITE3_INTEGER);
$stmt->bindParam(':userId', $userId, SQLITE3_INTEGER);

if ($stmt->execute()) {
    die(json_encode([
        "success" => true,
        "message" => translate("success", $i18n)
    ]));
} else {
    die(json_encode([
        "success" => false,
        "message" => translate("error", $i18n)
    ]));
}