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    Event::add

    (PECL event >= 1.2.6-beta)

    Event::add — Makes event pending

    Descrição

    public Event::add( float $timeout = ?): bool

    Marks event pending. Non-pending event will never occur, and the event callback will never be called. In conjunction with Event::del() an event could be re-scheduled by user at any time.

    If Event::add() is called on an already pending event, libevent will leave it pending and re-schedule it with the given timeout(if specified). If in this case timeout is not specified, Event::add() has no effect.

    Parâmetros

    timeout

    Timeout in seconds.

    Valor Retornado

    Retorna true em caso de sucesso ou false em caso de falha.

    Exemplos

    Exemplo #1 Adding a custom signal

    <?php
    /*
    Launch it in a terminal window:

    $ php examples/signal.php

    In another terminal window find out the pid and send SIGTERM, e.g.:

    $ ps aux | grep examp
    ruslan 3976 0.2 0.0 139896 11256 pts/1 S+ 10:25 0:00 php examples/signal.php
    ruslan 3978 0.0 0.0 9572 864 pts/2 S+ 10:26 0:00 grep --color=auto examp
    $ kill -TERM 3976

    At the first terminal window you should catch the following:

    Caught signal 15
    */
    class MyEventSignal {
    private     $base, $ev;

    public function     __construct($base) {
    $this->base = $base;
    $this->ev = Event::signal($base, SIGTERM, array($this, 'eventSighandler'));
    $this->ev->add();
    }

    public function     eventSighandler($no, $c) {
    echo     "Caught signal $no\n";
    $this->base->exit();
    }
    }

    $base = new EventBase();
    $c = new MyEventSignal($base);

    $base->loop();
    ?>

    O exemplo acima produzirá algo semelhante a:

    Caught signal 15

    Exemplo #2 Adding a timer

    <?php
    $base     = new EventBase();
    $n = 2;
    $e = Event::timer($base, function($n) use (&$e) {
    echo     "$n seconds elapsed\n";
    $e->delTimer();
    },     $n);
    $e->add($n);
    $base->loop();
    ?>

    O exemplo acima produzirá algo semelhante a:

    2 seconds elapsed

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