Get HTML list of 20-day moving averages from IEX

iex-sma-list.php

<?php
require_once 'vendor/autoload.php';

use GuzzleHttp\Client;

$client = new Client([
    'base_uri' => 'https://cloud.iexapis.com/stable/',
]);

$response = $client->get('stock/AAPL/indicator/sma', [
    'query' => [
        'token' => $_ENV['IEXKEY'],
        'range' => '3m',
        'input1' => 20,
    ],
]);

$result = json_decode($response->getBody());

$fmt = new NumberFormatter('en_US', NumberFormatter::CURRENCY);

echo "<ul>\n";
for ($i = 0; $i < count($result->chart); $i++) {
    if ($result->indicator[0][$i] === null) {
        continue;
    }

    $date = new DateTime($result->chart[$i]->date);
    $close = $result->chart[$i]->close;
    $sma = $result->indicator[0][$i];

    echo "<li>" . $date->format('F j') .
        ": close=" . $fmt->formatCurrency($close, 'USD') .
        "; SMA=" . $fmt->formatCurrency($sma, 'USD') . "</li>\n";
}
echo "</ul>\n";