PHP code example of stacktracer / stacktracer-symfony

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

stacktracer / stacktracer-symfony example snippets

use Stacktracer\SymfonyBundle\Service\TracingService;
use Stacktracer\SymfonyBundle\Model\Trace;
use Stacktracer\SymfonyBundle\Model\Span;

class MyController
{
    public function __construct(
        private TracingService $stacktracer
    ) {}
    
    public function someAction()
    {
        // Add breadcrumbs for debugging (linked to current span)
        $this->stacktracer->addBreadcrumb('user', 'User clicked checkout');
        
        // Create a span for a unit of work
        $this->stacktracer->withSpan('process-order', function(Span $span) {
            $span->setAttribute('order.id', $orderId);
            
            // Nested span for database query
            $this->stacktracer->withSpan('db.query', function($dbSpan) {
                $dbSpan->setAttribute('db.statement', 'SELECT * FROM orders');
                // ... database work
            }, Span::KIND_CLIENT);
            
            // ... process order
        });
        
        try {
            // Your code
        } catch (\Exception $e) {
            // Capture exception (auto-linked to current span)
            $this->stacktracer->captureException($e, [
                'order_id' => $orderId,
            ]);
        }
        
        // Capture a custom message
        $this->stacktracer->captureMessage(
            'Order completed',
            Trace::LEVEL_INFO,
            ['order_id' => $orderId]
        );
    }
}

use Stacktracer\SymfonyBundle\Model\FeatureFlag;

class MyController
{
    public function __construct(
        private TracingService $stacktracer
    ) {}
    
    public function checkout()
    {
        // Declare a single feature flag with variant
        $this->stacktracer->addFeatureFlag('Checkout button color', 'Blue');
        $this->stacktracer->addFeatureFlag('New checkout flow');
        
        // Declare multiple feature flags at once
        $this->stacktracer->addFeatureFlags([
            new FeatureFlag('Special offer', 'Free Coffee'),
            new FeatureFlag('Premium shipping'),
        ]);
        
        // Remove flags when features are deactivated
        $this->stacktracer->clearFeatureFlag('Checkout button color');
        
        // Clear all flags
        $this->stacktracer->clearFeatureFlags();
    }
}

$featureEnabled = $launchDarklyClient->variation('bool-flag-key', $user, false);

if ($featureEnabled) {
    $this->stacktracer->addFeatureFlag('bool-flag-key');
} else {
    $this->stacktracer->clearFeatureFlag('bool-flag-key');
}

// String variant
$variant = $launchDarklyClient->variation('button-color', $user, 'default');
$this->stacktracer->addFeatureFlag('button-color', $variant);

// Use an impression listener to automatically track experiments
class StacktracerImpressionListener implements \SplitIO\Sdk\ImpressionListener
{
    public function __construct(private TracingService $stacktracer) {}

    public function logImpression($data)
    {
        $this->stacktracer->addFeatureFlag(
            $data['impression']['feature'],
            $data['impression']['treatment']
        );
    }
}

// Outgoing HTTP request - api/users', [
    'headers' => [
        'traceparent' => $this->stacktracer->getTraceparent(),
    ],
]);

// When a form fails validation, you'll see breadcrumbs like:
// [warning] Form validation failed
//   - form.name: "contact"
//   - form.error_count: 2
//   - form.errors: [{"field": "email", "message": "Invalid email"}]

// Login failures appear as breadcrumbs + spans:
// [warning] Login attempt failed
//   - security.event: "login_failure"
//   - security.attempted_user: "[email protected]"
//   - security.failure_reason: "Invalid credentials"

// Email events appear as breadcrumbs + spans:
// [info] Email sent successfully
//   - mail.to: "[email protected]"
//   - mail.subject: "Welcome to our platform"
//   - mail.duration_ms: 234.5

// Fingerprints are computed automatically
$trace->getFingerprint();     // Unique error signature
$trace->getGroupKey();        // Grouping key for similar errors