Php/docs/evtimer.construct
EvTimer::__construct
(PECL ev >= 0.2.0)
EvTimer::__construct — Constructs an EvTimer watcher object
Description
public
EvTimer::__construct
(
float
$after
,
float
$repeat
,
callable
$callback
[,
mixed
$data
= NULL
[,
int
$priority
= 0
]] )
Constructs an EvTimer watcher object.
Parameters
after- Configures the timer to trigger after
afterseconds. repeat- If repeat is
0.0, then it will automatically be stopped once the timeout is reached. If it is positive, then the timer will automatically be configured to trigger again every repeat seconds later, until stopped manually. callback- See Watcher callbacks .
data- Custom data associated with the watcher.
priority- Watcher priority
Return Values
Returns EvTimer object on success.
Examples
Example #1 Simple timers
<?php// Create and start timer firing after 2 seconds$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 $w->stop();});// Loop until Ev::stop() is called or all of watchers stopEv::run();// Start and look if it works$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";?>
The above example will output something similar to:
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
See Also
- EvTimer::createStopped() - Creates EvTimer stopped watcher object
- EvPeriodic
- » ev_timer - relative and optionally repeating timeouts
- » Be smart about timeouts
