Event Collector

Captures PSR-14 dispatched events with timing, listener metadata, and source location.

What It Captures

Field	Description
name	Event class name
event	Serialized event object
file	Source file of the dispatch call
line	Source line of the dispatch call
time	Timestamp when the event was dispatched

Data Schema

[
    {
        "name": "App\\Event\\UserRegistered",
        "event": "object@App\\Event\\UserRegistered#12",
        "file": "/app/src/UserService.php",
        "line": "42",
        "time": 1711878000.456
    }
]

Summary (shown in debug entry list):

{
    "event": {
        "total": 8
    }
}

Contract

use AppDevPanel\Kernel\Collector\EventCollector;

$collector->collect(
    event: $event,     // The dispatched event object
    line: '/app/src/UserService.php:42',
);

INFO

EventCollectorAppDevPanel\Kernel\Collector\EventCollectorCollects Event data during application lifecycle.final Kernel · class · implements SummaryCollectorInterface implements SummaryCollectorInterfaceAppDevPanel\Kernel\Collector\SummaryCollectorInterfaceSummary data collector responsibility is to collect summary data for a collector. Summary is used to display a list of previous requests and select one to display full info. Its data set is specific to the list and is reduced compared to full data collected in {@see CollectorInterface}.Kernel · interface · extends CollectorInterface and depends on TimelineCollectorAppDevPanel\Kernel\Collector\TimelineCollectorCollects Timeline data during application lifecycle.final Kernel · class · implements SummaryCollectorInterface for cross-collector timeline integration.

How It Works

The collector is fed by EventDispatcherInterfaceProxyAppDevPanel\Kernel\Collector\EventDispatcherInterfaceProxyDecorator proxy for Event Dispatcher Interface. Intercepts calls and forwards data to collectors.final Kernel · class · implements EventDispatcherInterface — a PSR-14 EventDispatcherInterfacePsr\EventDispatcher\EventDispatcherInterfacePSR-14 Event Dispatcher Interface. Defines a dispatcher for events.PSR-14 · interface decorator. Every $dispatcher->dispatch($event) call is intercepted, timed, and forwarded to the collector.

Framework adapters register the proxy automatically.

Debug Panel

• Event type badges — color-coded by event category (request, response, controller, etc.)
• Chronological list — events shown in dispatch order with timestamps
• Expandable details — click to view the full event object and listener chain
• Event count — total events shown in sidebar badge