617179.php

<?php

$headers = [
    "Content-Security-Policy: style-src 'self'",
    "Content-Type: application/json",
];

foreach ($headers as $header) {
    header($header);
}


echo json_encode([
    'headers' => $headers,
    'src'     => 'https://gist.github.com/cmbuckley/c05a17f282ebb6642ff15cce8b16c3e6',
]);