List of active streams using PHP & Twitch API

You shouldn’t even use this in production code, it’s unsafe

Helix requires the clientID to be a header. And you didn’t declare an Auth token

No

No this is Kraken data formatting again

You also have no HTTP code checking or error checking

Something more like: (untested off the top of my head, doesn’t include how to fetch an oAuth token

<?php

    $names = [
        "xxxxxx",
        "xxxxxx"
    ];
    $status = [];
    foreach ($names as $name) {
        $status[$name] = false;
    }

    $url = "https://api.twitch.tv/helix/streams?user_login=’ . implode(’&user_login=’, $names)";

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Client-ID: ' . $client_id,
        'Authorisation: Bearer ' + token
    ));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $result = curl_exec($ch);
    $info = curl_getinfo($result);
    curl_close($ch);

    if ($info['http_code'] == 200) {
        $result = json_decode($result);
        if (json_last_error() == JSON_ERROR_NONE) {
            foreach ($result->data as $stream) {
                // do stuff with stream
                $name = strtolower($stream->user_name);
                $status[$name] = true;
            }
        } else {
            echo 'Failed to deocde JSON';
        }
    } else {
        echo 'Failed with ' . $info['http_code'];
    }

    foreach ($status as $name => $state) {
        if ($state) {
            echo '<iframe src="https://player.twitch.tv/?channel=' . $name) . '" frameborder="0" allowfullscreen="true" scrolling="no" height="378" width="620"></iframe>';
        } else {
            echo $name . ' not live';
        }
    }