Webhook from Contentful to Travis

contentful-travis.php

<?php

$token = $_SERVER['HTTP_AUTHORIZATION'];
$slug = urlencode($_SERVER['HTTP_X_TRAVIS_REPOSITORY']);

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "https://api.travis-ci.org/repo/$slug/requests",
    CURLOPT_POSTFIELDS => json_encode([
        'request' => [
            'branch'  => $_SERVER['HTTP_X_TRAVIS_BRANCH'],
            'message' => $_SERVER['HTTP_X_CONTENTFUL_TOPIC'],
        ]
    ]),
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'Accept: application/json',
        'Travis-API-Version: 3',
        "Authorization: $token",
    ],
    CURLOPT_RETURNTRANSFER => true,
    CURLINFO_HEADER_OUT    => true,
    CURLOPT_POST           => true,
]);

$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$request = curl_getinfo($ch, CURLINFO_HEADER_OUT);
curl_close($ch);

header('Content-Type: application/json');
header('', true, $status);
echo $response;