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    EvPeriodic::__construct

    (PECL ev >= 0.2.0)

    EvPeriodic::__construct — Constructs EvPeriodic watcher object

    説明

    public EvPeriodic::__construct(
         float $offset ,
         string $interval ,
         callable $reschedule_cb ,
         callable $callback ,
         mixed $data = null ,
         int $priority = 0
    )

    Constructs EvPeriodic watcher object and starts it automatically. EvPeriodic::createStopped() method creates stopped periodic watcher.

    パラメータ

    offset

    See Periodic watcher operation modes

    interval

    See Periodic watcher operation modes

    reschedule_cb

    Reschedule callback. You can pass null. See Periodic watcher operation modes

    callback

    See Watcher callbacks .

    data

    Custom data associated with the watcher.

    priority

    Watcher priority

    例

    例1 Periodic timer. Use reschedule callback

    <?php
    // Tick each 10.5 seconds

    function reschedule_cb ($watcher, $now) {
    return     $now + (10.5. - fmod($now, 10.5));
    }

    $w = new EvPeriodic(0., 0., "reschedule_cb", function ($w, $revents) {
    echo     time(), PHP_EOL;
    });
    Ev::run();
    ?>

    例2 Periodic timer. Tick every 10.5 seconds starting at now

    <?php
    // Tick every 10.5 seconds starting at now
    $w = new EvPeriodic(fmod(Ev::now(), 10.5), 10.5, NULL, function ($w, $revents) {
    echo     time(), PHP_EOL;
    });
    Ev::run();
    ?>

    例3 Hourly watcher

    <?php
    $hourly     = EvPeriodic(0, 3600, NULL, function () {
    echo     "once per hour\n";
    });
    ?>

    参考

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    User Contributed Notes 1 note

    up
    0
    1187328898 at qq dot com
    6 years ago
    function reschedule_cb_10s ($watcher, $now) {
    return $now + 10.;
    }

    //PHP7.0+版本不支持reschedule_cb模式
    // PHP5.6测试通过
    $w5 = new EvPeriodic(0.0, 0.0, "reschedule_cb_10s", function ($w, $revents) {
    echo "w5:enter:", time(), PHP_EOL;
    // sleep(3);
    echo "w5:end:", time(), PHP_EOL;
    });

    Ev::run();
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