Curl Multi API Request - PHP - php

Question

I have the API request as outlined below which works fine (given the correct replacement of "xxxyyy"!) however I want to perform this call simultaneously with up to 5-10 different remote URLs. In the example below I've shown just 1 remote URL however I have an array of 10,000 urls which I would like to query as quickly as possible, all of which return the same structure in JSON.
After researching the topic I believe this can be done in PHP using Curl Multi, does anyone know if this is true, if so how would I go about this so i can call say 10 at once rather than each one individually?
<?php
$username = "xxxyyyxxxyyyxxxyyyxxxyyy";
$password = "xxxyyyxxxyyyxxxyyyxxxyyyxxxyyyxxxyyyxxxyyyxxxyyy";
$remote_url_1 = 'https://xxxyyyxxxyyyxxxyyyxxxyyy_1.json';
{
$headers = array();
$headers[] = "Authorization: Basic " . base64_encode("$username:$password");
$headers[] = "X-Page:" . $pages;
$opts = array(
'http'=>array(
'method'=>"GET",
'header' => $headers
)
);
$context = stream_context_create($opts);
$file1 = file_get_contents($remote_url, false, $context);
$data = json_decode($file1, true);
$data2 = (array_values($data));
$orderline_id = $data2[0];
$orderline_sale_number = $data2[1];
$orderline_status = $data2[2];
$orderline_notes = $data2[3];
}
}
?>