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                # GlobalData 組件客戶端 **`(要求Workerman版本>=3.3.0)`** # \_\_construct ```php void \GlobalData\Client::__construct(mixed $server_address) ``` 實例化一個\\GlobalData\\Client客戶端對象。通過在客戶端對象上賦值屬性來進程間共享數據。 ### 參數 GlobalData server 服務端地址,格式```<ip地址>:<端口>```,例如```127.0.0.1:2207```。 如果是GlobalData server集群,則傳入一個地址數組,例如```array('10.0.0.10:2207', '10.0.0.0.11:2207')``` ## 說明 支持賦值、讀取、isset、unset操作。 同時支持cas原子操作。 ## 例子 ```php <?php use Workerman\Worker; require_once __DIR__ . '/Workerman/Autoloader.php'; require_once __DIR__ . '/GlobalData/src/Client.php'; // GlobalData Server $global_worker = new GlobalData\Server('0.0.0.0', 2207); $worker = new Worker('tcp://0.0.0.0:6636'); // 進程啟動時 $worker->onWorkerStart = function() { // 初始化一個全局的global data client global $global; $global = new \GlobalData\Client('127.0.0.1:2207'); }; // 每次服務端收到消息時 $worker->onMessage = function($connection, $data) { // 更改$global->somedata的值,其它進程會共享這個$global->somedata變量 global $global; echo "now global->somedata=".var_export($global->somedata, true)."\n"; echo "set \$global->somedata=$data"; $global->somedata = $data; }; Worker::runAll(); ``` ### 全部用法(php-fpm環境也可以使用) ```php require_once __DIR__ . '/GlobalData/src/Client.php'; $global = new Client('127.0.0.1:2207'); var_export(isset($global->abc)); $global->abc = array(1,2,3); var_export($global->abc); unset($global->abc); var_export($global->add('abc', 10)); var_export($global->increment('abc', 2)); var_export($global->cas('abc', 12, 18)); ``` ## 注意: GlobalData組件無法共享資源類型的數據,例如mysql連接、socket連接等無法共享。 如果在Workerman環境中使用GlobalData/Client,請在onXXX回調中實例化GlobalData/Client對象,例如在onWorkerStart中實例化。 不能這樣操作共享變量。 ```php $global->somekey = array(); $global->somekey[]='xxx'; $global->someObject = new someClass(); $global->someObject->someVar = 'xxx'; ``` 可以這樣 ```php $somekey = array(); $somekey[] = 'xxx'; $global->somekey = $somekey; $someObject = new someClass(); $someObject->someVar = 'xxx'; $global->someObject = $someObject; ```
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