Aaron Parecki

<?php
$ch = curl_init('https://tokens.indieauth.com/token');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
  'test' => 'foo'
]));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
  'Accept: application/json'
]);
$response = curl_exec($ch);
echo '<h2>Response</h2>';
echo '<pre>'.htmlspecialchars($response).'</pre>';
echo '<h2>Error Info</h2>';
echo '<pre>'.curl_errno($ch).'</pre>';
echo '<pre>'.curl_error($ch).'</pre>';