swoole_client_select (PECL swoole >= 1.9.0)swoole_client_select — Get the file description which are ready to read/write or error 说明 swoole_client_select( array &$read_array, array &$write_array, array &$error_array, float $timeout = 0.5): int 参数 read_array write_array error_array timeout 返回值