PHP Function for Retrieving Steam Workshop Item Subscriber Count

steam_workshop_item_subscriber.php

<?php
    function getSteamWorkshopSubscriberCount($workshopItemId) {
        $apiUrl = "https://api.steampowered.com/ISteamRemoteStorage/GetPublishedFileDetails/v1/";
        $postData = [
            "itemcount" => 1,
            "publishedfileids[0]" => $workshopItemId,
        ];

        $ch = curl_init($apiUrl);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode != 200) {
            error_log("Error fetching data from Steam Workshop API for item ID: $workshopItemId. HTTP code: $httpCode");
            return "N/A";
        }

        $data = json_decode($response, true);

        if (
            isset($data['response']['publishedfiledetails']) &&
            count($data['response']['publishedfiledetails']) > 0 &&
            isset($data['response']['publishedfiledetails'][0]['subscriptions'])
        ) {
            $subscriberCount = $data['response']['publishedfiledetails'][0]['subscriptions'];
            return number_format($subscriberCount, 0, '.', ',');
        } else {
            error_log("Invalid or empty response from Steam Workshop API for item ID: $workshopItemId, Response: $response");
            return "N/A";
        }
    }