本文实例讲述了php基于协程实现异步的方法。分享给大家供大家参考,具体如下:
github上php的协程大部分是根据这篇文章实现的:http://nikic.github.io/2012/12/22/cooperative-multitasking-using-coroutines-in-php.html。
它们最终的结果都是把回调变成了优雅的顺序执行的代码,但还是阻塞的,不是真正的异步。
比如最热门的:https://github.com/recoilphp/recoil
先安装最亲爱的妈妈:
compor require recoil/recoil
执行:
<?php//recoil.phpinclude __dir__ . '/vendor/autoload.php';u recoil\react\reactkernel;$i = 100000;reactkernel::start(task1());reactkernel::start(task2());function task1(){ global $i; echo "wait start" . php_eol; while ($i-- > 0) { yield; } echo "wait end" . php_eol;};function task2(){ echo "hello " . php_eol; yield; echo "world!" . php_eol;}
结果:
wait start
//等待若干秒
wait end
hello
world!
我本来是想让两个任务并行,结果两个任务变成了串行,中间等待的时间什么事情都干不了。react响应式的编程是严格禁止这种等待的,所以我就参照unity3d的协程自己写了个php版本的。上代码:
<?php//coroutine.php//依赖swoole实现的定时器,也可以用其它方法实现定时器class coroutine{ //可以根据需要更改定时器间隔,单位ms const tick_interval = 1; private $routinelist; private $tickid = -1; public function __construct() { $this->routinelist = []; } public function start(generator $routine) { $task = new task($routine); $this->routinelist[] = $task; $this->starttick(); } public function stop(generator $routine) { foreach ($this->routinelist as $k => $task) { if($task->getroutine() == $routine){ unt($this->routinelist[$k]); } } } private function starttick() { swoole_timer_tick(lf::tick_interval, function($timerid){ $this->tickid = $timerid; $this->run(); }); } private fun出自幽谷ction stoptick() { if($this->tickid >= 0) { swoole_timer_clear($this->tickid未来行业前景排名); } } private function run() { if(empty($this->routinelist)){ $this->stoptick(); return; } foreach ($this->routinelist as $k => $task) { $task->run(); if($task->isfinished()){ unt($this->routinelist[$k]); } } } }class task{ protected $stack; protected $routine; public function __construct(generator $routine) { $this->routine = $routine; $this->stack = new splstack(); } /** * [run 协程调度] * @return [type] [description] */ public function run() { $routine = &$this->routine; try { if(!$routine){ return; } $value = $routine->current(); //嵌套的协程 if ($value instanc烟花易冷被禁eof g闪闪烁烁的意思enerator) { $this->stack->push($routine); $routine = $value; return; } //嵌套的协程返回 if(!$routine->valid() && !$this->stack->impty()) { $routine = $this->stack->pop(); } $routine->next(); } catch (exception $e) { if ($this->stack->impty()) { /* throw the exception */ return; } } } /** * [isfinished 判断该task是否完成] * @return boolean [description] */ public function isfinished() { return $this->stack->impty() && !$this->routine->valid(); } public function getroutine() { return $this->routine; }}
测试代码:
<?php//test.php require 'coroutine.php';$i = 10000;$c = new coroutine();$c->start(task1());$c->start(task2());function task1(){ global $i; echo "wait start" . php_eol; while ($i-- > 0) { yield; } echo "wait end" . php_eol;};function task2(){ echo "hello " . php_eol; yield; echo "world!" . php_eol;}
结果:
wait start
hello
world!
//等待几秒,但不阻塞
wait end
本文发布于:2023-04-07 14:38:23,感谢您对本站的认可!
本文链接:https://www.wtabcd.cn/fanwen/zuowen/3bdbf828b773a1177a50adb1f4421b68.html
版权声明:本站内容均来自互联网,仅供演示用,请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系,我们将在24小时内删除。
本文word下载地址:php基于协程实现异步的方法分析.doc
本文 PDF 下载地址:php基于协程实现异步的方法分析.pdf
留言与评论(共有 0 条评论) |