Constructs an EvTimer watcher object


(PECL ev >= 0.2.0)

EvTimer::__constructConstructs 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 after seconds.

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

Возвращаемые значения

Returns EvTimer object on success.

Примеры

Пример #1 Simple timers

<?php
// Create and start timer firing after 2 seconds
$w1 = new EvTimer(20, function () {
    echo 
"2 seconds elapsed\n";
});

// Create and launch timer firing after 2 seconds repeating each second
// until we manually stop it
$w2 = new EvTimer(21, function ($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() == 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
$w_stopped EvTimer::createStopped(105, function($w) {
    echo 
"Callback of a timer created as stopped\n";

    
// Stop the watcher after 2 iterations
    
Ev::iteration() >= 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(100, 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