otlp_curl_transport

/**
 * Create an async curl transport for OTLP endpoints.
 *
 * Creates a CurlTransport that uses curl_multi for non-blocking I/O.
 * Requests are queued and executed asynchronously. OTLP/HTTP allows JSON
 * or Protobuf encoding; defaults to JSON.
 *
 * Requires: ext-curl PHP extension
 *
 * @param string $endpoint OTLP endpoint URL (e.g., 'http://localhost:4318')
 * @param JsonSerializer|ProtobufSerializer $serializer Serializer for encoding telemetry data (JSON or Protobuf)
 * @param CurlTransportOptions $options Transport configuration options
 * @param ?Transport $failover Optional failover transport receiving prior batches when primary fails
 */
otlp_curl_transport(string $endpoint, JsonSerializer|ProtobufSerializer $serializer, CurlTransportOptions $options, ?Transport $failover) : Transport