EvTimer::__construct
(PECL ev >= 0.2.0)
EvTimer::__construct — Constructs an EvTimer watcher object
Описание
public
EvTimer::__construct
(
double
$after
,
double
$repeat
,
callable
$callback
[,
mixed
$data
= NULL
[,
int
$priority
= 0
]] )Constructs an EvTimer watcher object.
Список параметров
-
after -
Configures the timer to trigger after
afterseconds. -
repeat -
If repeat is
0.0, then it will automatically be stopped once the timeout is reached. If it is positive, then the timer will automatically be configured to trigger again every repeat seconds later, until stopped manually. -
callback -
See Watcher callbacks .
-
data -
Custom data associated with the watcher.
-
priority
Возвращаемые значения
Returns EvTimer object on success.
Примеры
Пример #1 Simple timers
<?php
// Create and start timer firing after 2 seconds
$w1 = new EvTimer(2, 0, function () {
echo "2 seconds elapsed\n";
});
// Create and launch timer firing after 2 seconds repeating each second
// until we manually stop it
$w2 = new EvTimer(2, 1, function ($w) {
echo "is called every second, is launched after 2 seconds\n";
echo "iteration = ", Ev::iteration(), PHP_EOL;
// Stop the watcher after 5 iterations
Ev::iteration() == 5 and $w->stop();
// Stop the watcher if further calls cause more than 10 iterations
Ev::iteration() >= 10 and $w->stop();
});
// Create stopped timer. It will be inactive until we start it ourselves
$w_stopped = EvTimer::createStopped(10, 5, function($w) {
echo "Callback of a timer created as stopped\n";
// Stop the watcher after 2 iterations
Ev::iteration() >= 2 and $w->stop();
});
// Loop until Ev::stop() is called or all of watchers stop
Ev::run();
// Start and look if it works
$w_stopped->start();
echo "Run single iteration\n";
Ev::run(Ev::RUN_ONCE);
echo "Restart the second watcher and try to handle the same events, but don't block\n";
$w2->again();
Ev::run(Ev::RUN_NOWAIT);
$w = new EvTimer(10, 0, function() {});
echo "Running a blocking loop\n";
Ev::run();
echo "END\n";
?>
Результатом выполнения данного примера будет что-то подобное:
2 seconds elapsed is called every second, is launched after 2 seconds iteration = 1 is called every second, is launched after 2 seconds iteration = 2 is called every second, is launched after 2 seconds iteration = 3 is called every second, is launched after 2 seconds iteration = 4 is called every second, is launched after 2 seconds iteration = 5 Run single iteration Callback of a timer created as stopped Restart the second watcher and try to handle the same events, but don't block Running a blocking loop is called every second, is launched after 2 seconds iteration = 8 is called every second, is launched after 2 seconds iteration = 9 is called every second, is launched after 2 seconds iteration = 10 END
Смотрите также
- EvTimer::createStopped() - Creates EvTimer stopped watcher object
- EvPeriodic
- » ev_timer - relative and optionally repeating timeouts
- » Be smart about timeouts
Коментарии
Example of passing custom data:
<?php
// Create and start timer firing after 2 seconds with custom data
$w1 = new EvTimer(2, 0, function ($w) {
echo "Custom data: $w->data\n";
echo "2 seconds elapsed\n";
}, 'abcd');
Ev::run();
?>
Running this will print out:
Custom data: abcd
2 seconds elapsed
Note that 'data' is a public property of the event EvWatcher class.