How do I instrument Azure Monitor with OpenTelemetry?

         'my-php-app',
            'service.version' => '1.0.0',
        ]);

        // Initialize the OpenTelemetry tracer
        $tracerProvider = new TracerProvider($resource);
        $tracer = $tracerProvider->getTracer('my-php-tracer');

        // Set up Azure Monitor exporter
        $exporter = new AzureMonitorExporter('your-instrumentation-key');
        
        // Start a new span in your application
        $span = $tracer->startSpan('my-operation');

        // Perform some operations
        // ...

        // End the span
        $span->end();

        // Flush the telemetry data
        $tracerProvider->shutdown();
        ?>