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                # swoole_client->isConnected 返回`swoole_client`的連接狀態 ```php bool swoole_client->isConnected() ``` * 返回false,表示當前未連接到服務器 * 返回true,表示當前已連接到服務器 > 此函數在1.7.5以上版本可用 注意事項 ---- `isConnected`方法返回的是應用層狀態,只表示Client執行了`connect`并成功連接到了Server,并且沒有執行`close`關閉連接。Client可以執行`send`、`recv`、`close`等操作,但不能再次執行`connect`。 這不代表連接一定是可用的,當執行`send`或`recv`時仍然有可能返回錯誤,因為應用層無法獲得底層TCP連接的狀態,執行`send`或`recv`時應用層與內核發生交互,才能得到真實的連接可用狀態。
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