Gets game count and total hours for a specific Steam account.

total_hours.php

<?php
/**
 * Gets steam stats from Steam's API
 * @author Gabriel Santamaria <gaby.santamaria@outlook.fr>
 */
$steam_api = "APIKEYLOL";
$steam_id = "76561198127516196";

$jsonurl = "http://api.steampowered.com/IPlayerService/GetOwnedGames/v0001/?key=" . $steam_api . "&steamid=" . $steam_id . "&format=json";
$json = file_get_contents($jsonurl);
$decoded = json_decode($json, true);

$totalGames = $decoded["response"]["game_count"];
$totalHours = 0;
/**
 * Sum of all hours per game
 */
foreach ($decoded["response"]["games"] as $key => $value) {
    $totalHours = $totalHours + $value["playtime_forever"];
}

echo $totalGames . ' owned games.';
echo '<br>';
echo $totalHours / 60 . ' hours played.';