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- 框架初始化 - 安装插件 - 修复PHP8.4报错
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vendor/workerman/channel/README.md
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vendor/workerman/channel/README.md
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# Channel
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基于订阅的多进程通讯组件,用于workerman进程间通讯或者服务器集群通讯,类似redis订阅发布机制。基于workerman开发。
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Channel 提供两种通讯形式,分别是发布订阅的事件机制和消息队列机制。
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它们的主要区别是:
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- 事件机制是消息发出后,所有订阅该事件的客户端都能收到消息。
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- 消息队列机制是消息发出后,所有订阅该消息的客户端只有一个会收到消息,如果客户端忙消息会进行排队直到有客户端闲置后重新取到消息。
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- 需要注意的是 Channel 只是提供一种通讯方式,本身并不提供消息确认、重试、延迟、持久化等功能,请根据实际情况合理使用。
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# 手册地址
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[Channel手册](http://doc.workerman.net/components/channel.html)
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# 服务端
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```php
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use Workerman\Worker;
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//Tcp 通讯方式
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$channel_server = new Channel\Server('0.0.0.0', 2206);
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//Unix Domain Socket 通讯方式
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//$channel_server = new Channel\Server('unix:///tmp/workerman-channel.sock');
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if(!defined('GLOBAL_START'))
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{
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Worker::runAll();
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}
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```
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# 客户端
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```php
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use Workerman\Worker;
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$worker = new Worker();
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$worker->onWorkerStart = function()
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{
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// Channel客户端连接到Channel服务端
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Channel\Client::connect('<Channel服务端ip>', 2206);
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// 使用 Unix Domain Socket 通讯
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//Channel\Client::connect('unix:///tmp/workerman-channel.sock');
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// 要订阅的事件名称(名称可以为任意的数字和字符串组合)
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$event_name = 'event_xxxx';
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// 订阅某个自定义事件并注册回调,收到事件后会自动触发此回调
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Channel\Client::on($event_name, function($event_data){
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var_dump($event_data);
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});
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};
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$worker->onMessage = function($connection, $data)
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{
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// 要发布的事件名称
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$event_name = 'event_xxxx';
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// 事件数据(数据格式可以为数字、字符串、数组),会传递给客户端回调函数作为参数
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$event_data = array('some data.', 'some data..');
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// 发布某个自定义事件,订阅这个事件的客户端会收到事件数据,并触发客户端对应的事件回调
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Channel\Client::publish($event_name, $event_data);
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};
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if(!defined('GLOBAL_START'))
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{
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Worker::runAll();
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}
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````
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## 消息队列示例
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```php
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use Workerman\Worker;
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use Workerman\Timer;
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$worker = new Worker();
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$worker->name = 'Producer';
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$worker->onWorkerStart = function()
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{
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Client::connect();
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$count = 0;
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Timer::add(1, function() {
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Client::enqueue('queue', 'Hello World '.time());
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});
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};
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$mq = new Worker();
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$mq->name = 'Consumer';
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$mq->count = 4;
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$mq->onWorkerStart = function($worker) {
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Client::connect();
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//订阅消息 queue
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Client::watch('queue', function($data) use ($worker) {
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echo "Worker {$worker->id} get queue: $data\n";
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});
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//10 秒后取消订阅该消息
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Timer::add(10, function() {
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Client::unwatch('queue');
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}, [], false);
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};
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Worker::runAll();
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```
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