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Perfbase for CodeIgniter 4

CodeIgniter 4 integration for Perfbase.

This package is a thin adapter over perfbase/php-sdk. It wires CodeIgniter request and Spark command lifecycles into the Perfbase SDK without adding its own transport, queueing, or buffering layer.

What This Package Supports

Supported in v1:

• HTTP request profiling through a global CodeIgniter filter
• Spark CLI profiling through pre_command and post_command events
• optional authenticated user enrichment through a custom resolver or CodeIgniter Shield
• uncaught HTTP exception cleanup through a Perfbase-aware exception service
• worker-safe lifecycle cleanup for FrankenPHP worker mode

Not supported in v1:

• queue worker adapters
• scheduler adapters
• automatic profiling for third-party task runners
• custom dashboards or CodeIgniter-specific UI

Requirements

• PHP >=8.2 <8.5
• CodeIgniter ^4.3.8
• Perfbase PHP extension
• perfbase/php-sdk ^1.0

Optional:

• codeigniter4/shield for first-class authenticated user resolution

The current verified support floor is CodeIgniter 4.3.8 on PHP 8.2+.

Installation

Install the package:

This package resolves perfbase/php-sdk from Packagist by default. If you need to test against an unpublished SDK branch in a monorepo, add a temporary Composer repository override locally instead of assuming a built-in path repository.

Quick Start

1. Install the package.

2. Run the installer:

3. Set your API key in the environment or published config.
4. Make sure the Perfbase PHP extension is installed and enabled.
5. Verify the setup:

What perfbase:install Does

The installer:

• publishes app/Config/Perfbase.php
• registers the perfbase filter alias in app/Config/Filters.php
• adds perfbase to global before and after filters

If you only want the alias and do not want the command to modify global filters:

If you prefer to publish the config manually:

Configuration

After installation, configuration lives in app/Config/Perfbase.php.

The package also supports environment-backed defaults via src/Config/Perfbase.php.

Configuration Options

Environment Variables

profileHttpStatusCodes is a comma-separated allowlist. The default behavior is equivalent to [...range(200, 299), ...range(500, 599)], so 404 responses are dropped by default while 5xx responses are kept.

Example Production Configuration

Verification and Diagnostics

Run:

The doctor checks:

• whether profiling is enabled
• whether an API key is configured
• whether the SDK booted successfully
• whether the Perfbase extension is available
• whether the perfbase alias exists
• whether global before and after filters are configured
• whether Shield was detected
• whether FrankenPHP worker mode is active or configured

If worker mode is detected, the doctor also prints a reminder to restart workers after config or deployment changes.

Verification and Compatibility Testing

Required PR CI stays intentionally small:

• PHP 8.2 / CodeIgniter 4.3.8
• PHP 8.4 / CodeIgniter 4.7.2

Manual compatibility probes cover the wider declared CodeIgniter 4 range and are used when validating the support floor or widening support claims.

If you run local composer install on PHP 8.4, Composer may resolve a newer compatible CodeIgniter release than the declared floor. Use bin/test-compat or the manual compatibility workflow when you need to verify the floor explicitly.

Local Docker Compatibility Probes

Run compatibility probes locally without depending on the host PHP version:

Notes:

• The script uses Packagist dependency resolution, matching the published package behavior.
• --ignore-php-platform is intended for floor exploration when the package's current declared PHP floor is higher than the probe target.
• The script runs composer update, composer run phpstan, and composer run test inside the selected container image.

GitHub Actions Compatibility Probes

The manual workflow in .github/workflows/compatibility.yml runs a small set of explicit PHP/CodeIgniter pairs:

• PHP 8.2 / CodeIgniter 4.3.8
• PHP 8.2 / CodeIgniter 4.4.8
• PHP 8.2 / CodeIgniter 4.5.8
• PHP 8.2 / CodeIgniter 4.6.5
• PHP 8.4 / CodeIgniter 4.7.2

This workflow is manual on purpose. It is for compatibility investigation and release-floor validation, not for every pull request.

HTTP Profiling

HTTP profiling is implemented by the perfbase filter.

The package:

• starts profiling in the filter before() phase
• finalizes successful requests in after()
• finalizes uncaught exception paths through the Perfbase exception service
• only submits HTTP traces whose response status is in profileHttpStatusCodes (default: 2xx and 5xx)
• excludes query strings from http_url
• prefers route patterns for low-cardinality action naming
• falls back to Controller::method and then the sanitized path

HTTP Attributes

The HTTP lifecycle sets:

• source=http
• action
• http_method
• http_url
• http_status_code
• user_ip
• user_agent
• user_id when available
• hostname
• environment
• app_version
• php_version

http_url intentionally excludes query strings to avoid leaking secrets and to reduce cardinality.

Spark CLI Profiling

CLI profiling is wired through pre_command and post_command events.

The package:

• starts profiling before the command runs
• records the command name as the action
• records exit codes on completion
• records thrown exceptions on failure
• always clears active command state after completion

Filter Matching

HTTP and console include/exclude filters support:

• *
• .*
• glob patterns such as /admin/* or cache:*
• regex patterns such as /^GET \/api\//

HTTP matching evaluates:

• request path
• METHOD path
• route pattern when available
• METHOD routePattern
• controller
• method
• Controller::method

Console matching evaluates the Spark command name.

Malformed regex filters fail closed and will not match.

Sampling

sampleRate must be between 0.0 and 1.0.

• 0.0 disables profiling for that context
• 1.0 profiles every matching request or command
• values between 0.0 and 1.0 are sampled probabilistically

User Resolution

User resolution runs in this order:

1. configured custom resolver from $userResolver
2. runtime CodeIgniter Shield detection
3. a request-attached $request->user fallback

Only stable scalar identifiers are recorded.

Custom User Resolver

Set userResolver to either:

• a CodeIgniter service name
• a fully-qualified class name

The resolver must implement Perfbase\CodeIgniter4\Contracts\UserResolverInterface:

Then configure either:

or:

Shield Integration

If Shield is installed and its auth service is available, the package will try to resolve the current user automatically. Shield is optional and is not a hard Composer dependency.

Error Handling

The package fails open by default.

• profiling failures must not break the host application in production
• submission failures are handled internally
• invalid runtime conditions are logged only when configured
• when debug=true, profiling errors are rethrown to make integration problems visible

Use debug=true only while integrating or diagnosing package behavior.

Worker Mode

The package is designed to be safe under FrankenPHP worker mode:

• request and command state is kept only in the active lifecycle registry
• successful, failed, and exceptional flows all clear active lifecycle state
• no request-specific data is cached in the client provider, error handler, or exception service

If you run CodeIgniter under FrankenPHP workers:

• restart workers after changing Perfbase config
• restart workers after changing deployment artifacts
• keep any custom user resolver stateless or request-scoped

Troubleshooting

perfbase:doctor says the extension is unavailable

The Perfbase PHP extension is not loaded in the PHP runtime executing CodeIgniter. Verify the extension is installed, enabled, and visible to both web and CLI SAPIs.

perfbase:doctor says the filter alias or globals are missing

Run:

If you manage filters manually, verify that:

• the perfbase alias exists in app/Config/Filters.php
• perfbase is present in both global before and after filters

No traces are being sent

Check, in order:

1. enabled is true
2. apiKey is configured
3. the extension is available
4. your request or command is not excluded by filters
5. sampleRate is not effectively disabling the context

Profiling errors should fail loudly during integration

Set:

That makes profiling errors rethrow instead of being swallowed.

Development

Current local verification for this package:

• PHPUnit passing
• PHPStan passing
• coverage at or above the framework guide thresholds

Documentation

Full documentation is available at perfbase.com/docs.

• Docs: perfbase.com/docs
• Issues: github.com/perfbaseorg/codeigniter4/issues
• Support: [email protected]

License

Apache-2.0. See LICENSE.txt.