true, CURLOPT_POST => true, CURLOPT_HTTPHEADER => ['Content-Type: application/json'], CURLOPT_POSTFIELDS => $body, CURLOPT_TIMEOUT => 30, ]); $t0 = microtime(true); $response = curl_exec($ch); $duration = (microtime(true) - $t0) * 1000; $info = curl_getinfo($ch); $err = curl_error($ch); curl_close($ch); // Redact the API key before we display the request body anywhere $redacted = $params; $redacted['key'] = '***REDACTED***'; return [ 'endpoint' => $endpoint, 'url' => $url, 'http_code' => (int)($info['http_code'] ?? 0), 'raw_response' => $response, 'decoded' => json_decode((string)$response, true), 'curl_error' => $err, 'request_body' => $redacted, 'duration_ms' => round($duration, 1), ]; } /** Is the API key configured? */ function is_configured(): bool { return defined('MANDRILL_API_KEY') && MANDRILL_API_KEY !== 'PASTE-YOUR-API-KEY-HERE' && MANDRILL_API_KEY !== ''; } /** * Is this recipient allowed by the optional test-recipient whitelist? * An empty whitelist means "no restriction". */ function recipient_allowed(string $email): bool { $list = defined('ALLOWED_TEST_RECIPIENTS') ? ALLOWED_TEST_RECIPIENTS : []; if (empty($list)) return true; return in_array(strtolower(trim($email)), array_map('strtolower', $list), true); } /** * Was the call a success? Mandrill returns HTTP 200 on success. * On error it returns a JSON object like: * { "status": "error", "code": -1, "name": "Invalid_Key", "message": "..." } */ function mandrill_is_error(array $result): bool { if ($result['curl_error']) return true; if ($result['http_code'] !== 200) return true; if (is_array($result['decoded']) && isset($result['decoded']['status']) && $result['decoded']['status'] === 'error') { return true; } return false; } /** Pretty-print data as JSON. */ function json_pretty($data): string { return json_encode( $data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE ); } /** HTML escape shortcut. */ function h(?string $s): string { return htmlspecialchars((string)$s, ENT_QUOTES, 'UTF-8'); } /** * Render the standard "what just happened" debug panel. * Every demo page calls this to show exactly what went over the wire. */ function render_debug(array $result): void { $is_error = mandrill_is_error($result); ?>

What just happened?

POST — HTTP in ms error' : 'success' ?>

Request body (sent as JSON)

Response body

cURL error