Time stream went offline

API
7

My extent of anything programming related is next to nothing. I basically only know VERY basic PHP, which I kind of picked up in order to make my own custom APIs for use with NightBot. This is the entire source of my UpTime command.

<?php
// No name was entered for the broadcaster.
if (empty($_GET["Broadcaster"]))
{
        echo 'Channel broadcaster field is empty!';
        die();
}
// Set names to lowercase for URL injection.
$BroadcasterLower = strtolower($_GET["Broadcaster"]);
// Set timezone to match Twitch servers for JSON date/ time.
date_default_timezone_set("Greenwich");
// Inject lowercase name.
$ch = curl_init("https://api.twitch.tv/kraken/streams/" . $BroadcasterLower);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);
curl_close($ch);
// Decode the above JSON data.
$StreamingData = json_decode($result, true);
// Get a workable date and time out of the provided JSON.
$UpTimeDateTime = date('Y-m-d H:i:s', strtotime($StreamingData['stream']['created_at']));

// Stream offline
if($StreamingData['stream'] == null)
{    
    // Try to get the last broadcast via VOD. AKA past broadcasts.
    // Totally copy and pasted this from a few lines above... But it works.
    $ch = curl_init("https://api.twitch.tv/kraken/channels/" . $BroadcasterLower . "/videos?broadcasts=true&limit=1");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $result = curl_exec($ch);
    curl_close($ch);
    // Decode the above JSON data.
    $StreamVideos = json_decode($result, true);
    if($StreamVideos['videos'])
    {
        // Get the start time of the last broadcast, add the length of broadcast (in seconds) to get time broadcast ended.
        $StreamEndPoint = date('Y-m-d H:i:s', strtotime($StreamVideos['videos'][0]['recorded_at']) + $StreamVideos['videos'][0]['length']);
    }
    // User doesn't have VOD enabled. We can only guess at this point now.
    else
    {
        // Totally copy and pasted this from a few lines above... But it works.
        $ch = curl_init("https://api.twitch.tv/kraken/channels/" . $BroadcasterLower . "/");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($ch);
        curl_close($ch);
        // Decode the above JSON data.
        $StreamData = json_decode($result, true);
        if($StreamData['display_name'] == null)
        {
            echo 'Sorry, the broadcaster name is invalid!';
            die();
        }
        $OfflineGuess = date('Y-m-d H:i:s', strtotime($StreamData['updated_at']));
    }
    // Print out the offline message.
    echo 'Sorry, ' . htmlspecialchars($_GET["Broadcaster"]) . ' has not been streaming for the past ';
    // Print out the precise time stream has been offline.
    if($StreamVideos['videos'])
    {
        echo GetDateDifference($StreamEndPoint);
    }
    // No precise time available. Guessing game it is.
    else
    {
        echo GetDateDifference($OfflineGuess);
    }
    echo '. Check back later or follow and enable notifications to know when ' . htmlspecialchars($_GET["Broadcaster"]) . ' streams next!';
    die();
}
// Stream online.
else
{
    // User is streaming. Print out info.
    echo $StreamingData['stream']['channel']['display_name'] . ' has been streaming ' . $StreamingData['stream']['channel']['game'] . ' for the past ';
    echo GetDateDifference($UpTimeDateTime);
    echo '.';
}
// Function to get the date difference.
function GetDateDifference($datetime)
{
    $now = new DateTime;
    $ago = new DateTime($datetime);
    $diff = $now->diff($ago);

    $diff->w = floor($diff->d / 7);
    $diff->d -= $diff->w * 7;

    $string = array
    (
        'y' => 'year',
        'm' => 'month',
        'w' => 'week',
        'd' => 'day',
        'h' => 'hour',
        'i' => 'minute',
        's' => 'second',
    );
    foreach ($string as $k => &$v) {
        if ($diff->$k) {
            $v = $diff->$k . ' ' . $v . ($diff->$k > 1 ? 's' : '');
        }
        else
        {
            unset($string[$k]);
        }
    }
    return $string ? implode(', ', $string) . '' : '';
}
?>

Or I also have it on pastebin since I share all of my APIs on the NightBot community forums. Pastebin source for UpTime.php