add
int \Workerman\Timer::add(float $time_interval, callable $callback [,$args = array(), bool $persistent = true])
定时执行某个函数或者类方法。
注意:定时器是在当前进程中运行的,workerman中不会创建新的进程或者线程去运行定时器。
参数
time_interval
多长时间执行一次,单位秒,支持小数,可以精确到0.001,即精确到毫秒级别。
callback
回调函数注意:如果回调函数是类的方法,则方法必须是public属性
args
回调函数的参数,必须为数组,数组元素为参数值
persistent
是否是持久的,如果只想定时执行一次,则传递false(只执行一次的任务在执行完毕后会自动销毁,不必调用Timer::del())。默认是true,即一直定时执行。
返回值
返回一个整数,代表计时器的timerid,可以通过调用Timer::del($timerid)销毁这个计时器。
示例
1、定时函数为匿名函数(闭包)
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';$task = new Worker();// 开启多少个进程运行定时任务,注意业务是否在多进程有并发问题$task->count = 1;$task->onWorkerStart = function(Worker $task){// 每2.5秒执行一次$time_interval = 2.5;Timer::add($time_interval, function(){echo "task run\n";});};// 运行workerWorker::runAll();
2、只在指定进程中设置定时器
一个worker实例有4个进程,只在id编号为0的进程上设置定时器。
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';$worker = new Worker();$worker->count = 4;$worker->onWorkerStart = function(Worker $worker){// 只在id编号为0的进程上设置定时器,其它1、2、3号进程不设置定时器if($worker->id === 0){Timer::add(1, function(){echo "4个worker进程,只在0号进程设置定时器\n";});}};// 运行workerWorker::runAll();
3、定时函数为匿名函数,利用闭包传递参数
use Workerman\Worker;use Workerman\Timer;use Workerman\Connection\TcpConnection;require_once __DIR__ . '/vendor/autoload.php';$ws_worker = new Worker('websocket://0.0.0.0:8080');$ws_worker->count = 8;// 连接建立时给对应连接设置定时器$ws_worker->onConnect = function(TcpConnection $connection){// 每10秒执行一次$time_interval = 10;$connect_time = time();// 给connection对象临时添加一个timer_id属性保存定时器id$connection->timer_id = Timer::add($time_interval, function()use($connection, $connect_time){$connection->send($connect_time);});};// 连接关闭时,删除对应连接的定时器$ws_worker->onClose = function(TcpConnection $connection){// 删除定时器Timer::del($connection->timer_id);};// 运行workerWorker::runAll();
4、定时器函数为匿名函数,利用定时器接口传递参数
use Workerman\Worker;use Workerman\Timer;use Workerman\Connection\TcpConnection;require_once __DIR__ . '/vendor/autoload.php';$ws_worker = new Worker('websocket://0.0.0.0:8080');$ws_worker->count = 8;// 连接建立时给对应连接设置定时器$ws_worker->onConnect = function(TcpConnection $connection){// 每10秒执行一次$time_interval = 10;$connect_time = time();// 给connection对象临时添加一个timer_id属性保存定时器id$connection->timer_id = Timer::add($time_interval, function($connection, $connect_time){$connection->send($connect_time);}, array($connection, $connect_time));};// 连接关闭时,删除对应连接的定时器$ws_worker->onClose = function(TcpConnection $connection){// 删除定时器Timer::del($connection->timer_id);};// 运行workerWorker::runAll();
5、定时函数为普通函数
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';// 普通的函数function send_mail($to, $content){echo "send mail ...\n";}$task = new Worker();$task->onWorkerStart = function(Worker $task){$to = 'workerman@workerman.net';$content = 'hello workerman';// 10秒后执行发送邮件任务,最后一个参数传递false,表示只运行一次Timer::add(10, 'send_mail', array($to, $content), false);};// 运行workerWorker::runAll();
6、定时函数为类的方法
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';class Mail{// 注意,回调函数属性必须是publicpublic function send($to, $content){echo "send mail ...\n";}}$task = new Worker();$task->onWorkerStart = function($task){// 10秒后发送一次邮件$mail = new Mail();$to = 'workerman@workerman.net';$content = 'hello workerman';Timer::add(10, array($mail, 'send'), array($to, $content), false);};// 运行workerWorker::runAll();
7、定时函数为类方法(类内部使用定时器)
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';class Mail{// 注意,回调函数属性必须是publicpublic function send($to, $content){echo "send mail ...\n";}public function sendLater($to, $content){// 回调的方法属于当前的类,则回调数组第一个元素为$thisTimer::add(10, array($this, 'send'), array($to, $content), false);}}$task = new Worker();$task->onWorkerStart = function(Worker $task){// 10秒后发送一次邮件$mail = new Mail();$to = 'workerman@workerman.net';$content = 'hello workerman';$mail->sendLater($to, $content);};// 运行workerWorker::runAll();
8、定时函数为类的静态方法
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';class Mail{// 注意这个是静态方法,回调函数属性也必须是publicpublic static function send($to, $content){echo "send mail ...\n";}}$task = new Worker();$task->onWorkerStart = function(Worker $task){// 10秒后发送一次邮件$to = 'workerman@workerman.net';$content = 'hello workerman';// 定时调用类的静态方法Timer::add(10, array('Mail', 'send'), array($to, $content), false);};// 运行workerWorker::runAll();
9、定时函数为类的静态方法(带命名空间)
namespace Task;use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';class Mail{// 注意这个是静态方法,回调函数属性也必须是publicpublic static function send($to, $content){echo "send mail ...\n";}}$task = new Worker();$task->onWorkerStart = function(Worker $task){// 10秒后发送一次邮件$to = 'workerman@workerman.net';$content = 'hello workerman';// 定时调用带命名空间的类的静态方法Timer::add(10, array('\Task\Mail', 'send'), array($to, $content), false);};// 运行workerWorker::runAll();
10、定时器中销毁当前定时器(use闭包方式传递$timer_id)
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';$task = new Worker();$task->onWorkerStart = function(Worker $task){// 计数$count = 1;// 要想$timer_id能正确传递到回调函数内部,$timer_id前面必须加地址符 &$timer_id = Timer::add(1, function()use(&$timer_id, &$count){echo "Timer run $count\n";// 运行10次后销毁当前定时器if($count++ >= 10){echo "Timer::del($timer_id)\n";Timer::del($timer_id);}});};// 运行workerWorker::runAll();
11、定时器中销毁当前定时器(参数方式传递$timer_id)
use Workerman\Worker;use Workerman\Timer;require_once __DIR__ . '/vendor/autoload.php';class Mail{public function send($to, $content, $timer_id){// 临时给当前对象添加一个count属性,记录定时器运行次数$this->count = empty($this->count) ? 1 : $this->count;// 运行10次后销毁当前定时器echo "send mail {$this->count}...\n";if($this->count++ >= 10){echo "Timer::del($timer_id)\n";Timer::del($timer_id);}}}$task = new Worker();$task->onWorkerStart = function(Worker $task){$mail = new Mail();// 要想$timer_id能正确传递到回调函数内部,$timer_id前面必须加地址符 &$timer_id = Timer::add(1, array($mail, 'send'), array('to', 'content', &$timer_id));};// 运行workerWorker::runAll();
