EvPeriodic::__construct

(PECL ev >= 0.2.0)

EvPeriodic::__construct — Constructs EvPeriodic watcher object

Descrição

public EvPeriodic::__construct ( double $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.

Parâmetros

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

Valor Retornado

Returns EvPeriodic object on success.

Exemplos

Exemplo #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();
?>

Exemplo #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();
?>

Exemplo #3 Hourly watcher


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

Veja Também

Periodic watcher operation modes
EvTimer
EvPeriodic::createStopped() - Create a stopped EvPeriodic watcher

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