Update README.md

README.md

@@ -61,10 +61,57 @@ if (isset($GLOBALS['tracer'])) {
 ### Explanation
 
 - **Service Name**: Set the name of the service as it will appear in your observability platform. It uses the `OTEL_SERVICE_NAME` environment variable if set; otherwise, it defaults to `default-service-name`.
-- **OTLP Endpoint**: Specify the endpoint where the OpenTelemetry Collector is running. It uses the `OTEL_EXPORTER_OTLP_ENDPOINT` environment variable if set; otherwise, it defaults to `http://localhost:4317`.
+- **OTLP Endpoint**: Specify the endpoint where SigNoz is running. It uses the `OTEL_EXPORTER_OTLP_ENDPOINT` environment variable if set; otherwise, it defaults to `http://localhost:4317`.
 
 You can add more configuration options as needed. The plugin will include this file and apply the configurations when it initializes.
 
 ## Additional Information
 
-For more information on how to use and configure the Simple Otel plugin, please refer to the documentation or visit the [OpenTelemetry PHP documentation](https://opentelemetry.io/docs/php/).
+For more information on how to use and configure the Simple Otel plugin, please refer to the documentation or visit the [OpenTelemetry PHP documentation](https://opentelemetry.io/docs/php/).
+
+## Example `simple-otel.php` Plugin File
+
+Here is an example of what the `simple-otel.php` plugin file might look like:
+
+```php
+<?php
+/*
+Plugin Name: Simple Otel
+Description: Integrate OpenTelemetry with WordPress.
+Version: 1.0
+Author: Your Name
+*/
+
+// Ensure the autoload file is included
+require_once __DIR__ . '/vendor/autoload.php';
+require_once __DIR__ . '/config.php';
+
+use OpenTelemetry\SDK\Trace\TracerProvider;
+use OpenTelemetry\SDK\Trace\SpanProcessor\SimpleSpanProcessor;
+use OpenTelemetry\Contrib\OtlpGrpc\Exporter as OtlpGrpcExporter;
+
+// Create an OTLP GRPC exporter
+$otlpExporter = new OtlpGrpcExporter([
+    'endpoint' => $otel_exporter_otlp_endpoint,
+]);
+
+// Create a tracer provider with the OTLP exporter
+$tracerProvider = new TracerProvider(
+    new SimpleSpanProcessor($otlpExporter)
+);
+
+// Register the tracer provider globally
+\OpenTelemetry\API\Globals::setTracerProvider($tracerProvider);
+
+// Example usage of the tracer
+function otel_trace_example() {
+    $tracer = \OpenTelemetry\API\Globals::tracerProvider()->getTracer('example-tracer');
+    $span = $tracer->startAndActivateSpan('example-span');
+    // Your custom code here
+    $span->end();
+}
+add_action('wp_head', 'otel_trace_example');
+?>
+```
+
+By following these instructions, you can set up the Simple Otel plugin to send telemetry data directly to SigNoz without the need for an intermediate OpenTelemetry Collector.