LogEvent

An immutable structured log event.

Nothing is flattened early: the message template and property bag are preserved so structured sinks (JSON) can emit named fields, while text sinks call LogEvent::renderMessage() to interpolate.

Synopsis

final readonly class LogEvent

Source	Logging/LogEvent.php

Properties

Property	Type	Description
$category	string	readonly.
$exception	?Throwable	readonly.
$level	Level	readonly.
$messageTemplate	string	readonly.
$properties	array	readonly.
$scope	array	readonly.
$timestamp	float	readonly.

Constructor

__construct()

public function __construct(float $timestamp, Level $level, string $category, string $messageTemplate, array<string, mixed> $properties = [], array<string, mixed> $scope = [], Throwable|null $exception = null): mixed

From $context[‘exception’] per PSR-3.

Parameter	Type	Description
$timestamp	float	UNIX timestamp with microseconds (microtime(true)).
$level	Level
$category	string
$messageTemplate	string	Raw template, e.g. “Order {orderId} shipped”.
$properties	array``<``string``, ``mixed``>	Named properties (PSR-3 $context sans “exception”).
$scope	array``<``string``, ``mixed``>	Ambient scope properties merged in at emit time.
$exception	Throwable`	“null`

Returns mixed

Methods

Method	Description
renderMessage(): string	Interpolate {placeholder} tokens in the template using properties then scope.

renderMessage()

public function renderMessage(): string

Interpolate {placeholder} tokens in the template using properties then scope.

Non-scalar / non-stringable values are left as-is (placeholder kept). Mirrors PSR-3 interpolation semantics.

Returns string