(PECL event >= 1.2.6-beta)
Event::addSignal — Makes signal event pending
$timeout
   
  ] )Event::addSignal() is an alias of Event::add()
Example #1 Event::addSignal() example
<?php
/*
Launch it in a terminal window:
$ php examples/signal.php
In another terminal window find out the pid and send SIGTERM, e.g.:
$ ps aux | grep examp
ruslan    3976  0.2  0.0 139896 11256 pts/1    S+   10:25   0:00 php examples/signal.php
ruslan    3978  0.0  0.0   9572   864 pts/2    S+   10:26   0:00 grep --color=auto examp
$ kill -TERM 3976
At the first terminal window you should catch the following:
Caught signal 15
*/
class MyEventSignal {
    private $base, $ev;
    public function __construct($base) {
        $this->base = $base;
        $this->ev = Event::signal($base, SIGTERM, array($this, 'eventSighandler'));
        $this->ev->addSignal();
    }
    public function eventSighandler($no, $c) {
        echo "Caught signal $no\n";
        $this->base->exit();
    }
}
$base = new EventBase();
$c    = new MyEventSignal($base);
$base->loop();
?>
The above example will output something similar to:
Caught signal 15