PHP Manual
Event
The EventListener class

The EventListener class

(PECL event >= 1.5.0)

Introduction

Represents a connection listener.

Class synopsis

final class EventListener {

/* Constants */

const int OPT_LEAVE_SOCKETS_BLOCKING = 1;

const int OPT_CLOSE_ON_FREE = 2;

const int OPT_CLOSE_ON_EXEC = 4;

const int OPT_REUSEABLE = 8;

const int OPT_THREADSAFE = 16;

/* Properties */

public readonly int $fd;

/* Methods */

public __construct(
     EventBase $base ,
     callable $cb ,
     mixed $data ,
     int $flags ,
     int $backlog ,
     mixed $target
)

public disable(): bool

public enable(): bool

public getBase(): void

public static getSocketName( string &$address , mixed &$port = ?): bool

public setCallback( callable $cb , mixed $arg = null ): void

public setErrorCallback( string $cb ): void

}

Properties

fd: Numeric file descriptor of the underlying socket. (Added in event-1.6.0 .)

Predefined Constants

EventListener::OPT_LEAVE_SOCKETS_BLOCKING: By default Libevent turns underlying file descriptors, or sockets, to non-blocking mode. This flag tells Libevent to leave them in blocking mode.
EventListener::OPT_CLOSE_ON_FREE: If this option is set, the connection listener closes its underlying socket when the EventListener object is freed.
EventListener::OPT_CLOSE_ON_EXEC: If this option is set, the connection listener sets the close-on-exec flag on the underlying listener socket. See platform documentation for fcntl and FD_CLOEXEC for more information.
EventListener::OPT_REUSEABLE: By default on some platforms, once a listener socket is closed, no other socket can bind to the same port until a while has passed. Setting this option makes Libevent mark the socket as reusable, so that once it is closed, another socket can be opened to listen on the same port.
EventListener::OPT_THREADSAFE: Allocate locks for the listener, so that it’s safe to use it from multiple threads.

EventListener::__construct — Creates new connection listener associated with an event base
EventListener::disable — Disables an event connect listener object
EventListener::enable — Enables an event connect listener object
EventListener::getBase — Returns event base associated with the event listener
EventListener::getSocketName — Retreives the current address to which the listener's socket is bound
EventListener::setCallback — The setCallback purpose
EventListener::setErrorCallback — Set event listener's error callback