true, CURLOPT_POST => true, CURLOPT_POSTFIELDS => $raw, CURLOPT_HTTPHEADER => [ 'Content-Type: application/json', 'PayPal-Transmission-Id: SIM-TEST', 'PayPal-Transmission-Time: ' . gmdate('c'), 'PayPal-Cert-Url: https://example.com/cert.pem', 'PayPal-Auth-Algo: SHA256withRSA', 'PayPal-Transmission-Sig: FAKE', ], ]); $res = curl_exec($ch); $err = curl_error($ch); $http = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); echo "HTTP: $http\n"; if ($err) echo "CURL_ERROR: $err\n"; echo "RESPONSE:\n" . $res . "\n"; // show if a new file was written $dataDir = realpath(__DIR__ . '/../data'); $files = glob($dataDir . '/*.json'); echo "Files in data/ after run: \n"; foreach ($files as $f) echo basename($f) . "\n"; ?>