Como consumir a API de CNPJ em PHP?

1php --ri curl
2# Habilite a extensão cURL na instalação do PHP, se necessário.

1$env:AFD_PUBLIC_KEY="afd_test_pk_..."
2$env:AFD_SECRET_KEY="seu_segredo_de_desenvolvimento"
3$env:AFD_PROJECT_ID="proj_..."

1export AFD_PUBLIC_KEY="afd_test_pk_..."
2export AFD_SECRET_KEY="seu_segredo_de_desenvolvimento"
3export AFD_PROJECT_ID="proj_..."

1<?php
2function request(string $url, array $headers = [], ?string $basic = null): array {
3    $curl = curl_init($url);
4    $retryAfter = null;
5    curl_setopt_array($curl, [CURLOPT_RETURNTRANSFER => true,
6        CURLOPT_TIMEOUT => 30, CURLOPT_HTTPHEADER => $headers,
7        CURLOPT_HEADERFUNCTION => function ($ch, $line) use (&$retryAfter) {
8            if (stripos($line, 'Retry-After:') === 0) $retryAfter = trim(substr($line, 12));
9            return strlen($line);
10        }]);
11    if ($basic !== null) curl_setopt($curl, CURLOPT_USERPWD, $basic);
12    $body = curl_exec($curl);
13    if ($body === false) throw new RuntimeException(curl_error($curl));
14    $http = curl_getinfo($curl, CURLINFO_HTTP_CODE);
15    curl_close($curl);
16    $payload = json_decode($body, true, 512, JSON_THROW_ON_ERROR);
17    if ($http >= 400 || !($payload['success'] ?? false)) {
18        throw new RuntimeException(json_encode(['http' => $http,
19            'codes' => array_column($payload['errors'] ?? [], 'code'),
20            'retry_after' => $retryAfter]));
21    }
22    return $payload;
23}
24foreach (['AFD_PUBLIC_KEY', 'AFD_SECRET_KEY', 'AFD_PROJECT_ID'] as $name) {
25    if (!getenv($name)) throw new RuntimeException('Configure ' . $name);
26}
27$operationKey = bin2hex(random_bytes(16));
28print_r(request('https://api.apifordevs.com/api/v1/ping/billable?dev_mode=true', [
29    'X-Project-Id: ' . getenv('AFD_PROJECT_ID'), 'Idempotency-Key: ' . $operationKey
30], getenv('AFD_PUBLIC_KEY') . ':' . getenv('AFD_SECRET_KEY')));
31print_r(request('https://api.apifordevs.com/api/v1/cnpj/00000000007951')['data'][0]);

1php integracao.php