EvPeriodic::__construct
(PECL ev >= 0.2.0)
EvPeriodic::__construct — Constructs EvPeriodic watcher object
Description
public
EvPeriodic::__construct(
float
string
callable
callable
mixed
int
)
float
$offset
,
string
$interval
,
callable
$reschedule_cb
,
callable
$callback
,
mixed
$data
= null
,
int
$priority
= 0
)
Constructs EvPeriodic watcher object and starts it automatically. EvPeriodic::createStopped() method creates stopped periodic watcher.
Parameters
-
offset
-
interval
-
reschedule_cb
-
Reschedule callback. You can pass
null
. See Periodic watcher operation modes -
callback
-
See Watcher callbacks .
-
data
-
Custom data associated with the watcher.
-
priority
Examples
Example #1 Periodic timer. Use reschedule callback
<?php // Tick each 10.5 seconds function reschedule_cb ($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"; }); ?>
See Also
- Periodic watcher operation modes
- EvTimer
- EvPeriodic::createStopped() - Create a stopped EvPeriodic watcher
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/evperiodic.construct.php