(PECL ev >= 0.2.0)
EvPeriodic::__construct — Constructs EvPeriodic watcher object
public EvPeriodic::__construct ( float $offset , string $interval , callable $reschedule_cb , callable $callback [, mixed $data = null [, int $priority = 0 ]] )
Constructs EvPeriodic watcher object and starts it automatically. EvPeriodic::createStopped() method creates stopped periodic watcher.
offset
interval
reschedule_cb
Reschedule callback. You can pass null
. See Periodic watcher operation modes
callback
See Watcher callbacks .
data
Custom data associated with the watcher.
priority
Returns EvPeriodic object on success.
Example #1 Periodic timer. Use reschedule callback
<?php // Tick each 10.5 seconds function reschedule_cb ($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(); ?>
Example #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(); ?>
Example #3 Hourly watcher
<?php $hourly = EvPeriodic(0, 3600, NULL, function () { echo "once per hour\n"; }); ?>
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https://www.php.net/manual/en/evperiodic.construct.php