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PHP Manual [EvPeriodic

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PHP Manual || EvPeriodic

(PECL ev >= 0.2.0)

EvPeriodic::__constructConstructs EvPeriodic watcher object

Description

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.

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

Return Values

Returns EvPeriodic object on success.

Examples

Example #1 Periodic timer. Use reschedule callback

<?php
// Tick each 10.5 seconds

function reschedule_cb ($watcher$now) {
 return 
$now + (10.5. - fmod($now10.5));
}

$w = new EvPeriodic(0.0."reschedule_cb", function ($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
$w = new EvPeriodic(fmod(Ev::now(), 10.5), 10.5NULL, function ($w$revents) {
 echo 
time(), PHP_EOL;
});
Ev::run();
?>

Example #3 Hourly watcher

<?php
$hourly 
EvPeriodic(03600NULL, function () {
 echo 
"once per hour\n";
});
?>

See Also



PHP Manual || EvPeriodic