$logger
$logger : \Psr\Log\LoggerInterface
Monolog POSIX signal handler
$logger : \Psr\Log\LoggerInterface
$previousSignalHandler : array<int,callable|string|int>
$signalLevelMap : array<int,int>
$signalRestartSyscalls : array<int,bool>
registerSignalHandler(int $signo, int|string $level = LogLevel::CRITICAL, bool $callPrevious = true, bool $restartSyscalls = true, bool|null $async = true) : $this
| int | $signo | |
| int|string | $level | Level or level name |
| bool | $callPrevious | |
| bool | $restartSyscalls | |
| bool|null | $async |