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                # Coroutine\\MySQL->query [TOC] 執行SQL語句 ~~~ array|bool query(string $sql, double $timeout = -1) ~~~ * `$sql`:SQL語句 * `$timeout`:超時時間,`$timeout`如果小于或等于`0`,表示永不超時。在規定的時間內`MySQL`服務器未能返回數據,底層將返回`false`,設置錯誤碼為`110`,并切斷連接 * 返回值:超時/出錯返回`false`,否則以數組形式返回查詢結果 ~~~ $swoole_mysql = new Swoole\Coroutine\MySQL(); $swoole_mysql->connect([ 'host' => '127.0.0.1', 'port' => 3306, 'user' => 'user', 'password' => 'pass', 'database' => 'test', ]); $res = $swoole_mysql->query('select * from $table'); if($res === false) { return; } foreach ($res as $value) { echo $value['f_filed_name']; } ~~~ ## 延遲接收 設置`defer`后,調用`query`會直接返回`true`。調用`recv`才會進入協程等待,返回查詢的結果。
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