EvPeriodic::__construct

(PECL ev >= 0.2.0)

Constructs EvPeriodic watcher object

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.

Parameters:

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

Returns:

Returns EvPeriodic object on success.

Examples:

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();
?>

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();
?>

Hourly watcher

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