(PECL event >= 1.2.6-beta)
Event::addTimer — Makes timer event pending
Example #1 Event::addTimer() example
<?php
$base = new EventBase();
$n = 2;
$e = Event::timer($base, function($n) use (&$e) {
echo "$n seconds elapsed\n";
$e->delTimer();
}, $n);
$e->addTimer($n);
$base->loop();
?>
以上例程的输出类似于：
2 seconds elapsed