Level

Ordinal log level with minimum-level (>=) semantics.

Aligned to PSR-3 / RFC 5424 so a PSR-3 level string maps directly, with an extra Level::Trace below Debug (Serilog “Verbose”) that degrades to “debug” on PSR-3 output. Higher value = more severe. A message passes a threshold when $message->value >= $threshold->value.

Synopsis

enum Level: int

Source	Logging/Level.php

Cases

Case	Value	Description
Trace	50
Debug	100
Info	200
Notice	250
Warning	300
Error	400
Critical	500
Alert	550
Emergency	600

Properties

Property	Type	Description
$name	string	readonly.
$value	int	readonly.

Methods

Method	Description
cases(): array
[`from(string	int $value): static`](#from)
fromName(string $name): Level	Parse a case-insensitive level name for configuration (e.g.
fromPsr(string $psrLevel): Level	Map a PSR-3 LogLevel string to a Level.
label(): string	Lowercase canonical name used in structured output (e.g.
passes(Level $threshold): bool	Whether a message at $this level passes the given minimum threshold.
toPsr(): string	The PSR-3 level string for this level.
[`tryFrom(string	int $value): ?static`](#tryfrom)

cases()

public static function cases(): array

Returns array

from()

public static function from(string|int $value): static

Parameter	Type	Description
$value	`string“	“int`

Returns static

fromName()

public static function fromName(string $name): Level

Parse a case-insensitive level name for configuration (e.g.

LOG_LEVEL=info). Accepts “warn” as an alias for “warning”.

Parameter	Type	Description
$name	string

Returns Level

Throws	When
InvalidArgumentException	on an unknown name.

fromPsr()

public static function fromPsr(string $psrLevel): Level

Map a PSR-3 LogLevel string to a Level.

Parameter	Type	Description
$psrLevel	string

Returns Level

Throws	When
InvalidArgumentException	on an unknown level (PSR-3 requirement).

label()

public function label(): string

Lowercase canonical name used in structured output (e.g.

“trace”, “warning”).

Returns string

passes()

public function passes(Level $threshold): bool

Whether a message at $this level passes the given minimum threshold.

Parameter	Type	Description
$threshold	Level

Returns bool

toPsr()

public function toPsr(): string

The PSR-3 level string for this level.

Trace has no PSR-3 equivalent and degrades to “debug”.

Returns string

tryFrom()

public static function tryFrom(string|int $value): ?static

Parameter	Type	Description
$value	`string“	“int`

Returns ?``static