蓝牙和UWB在定位方面的优缺点以及未来技术发展趋势
一、核心特性对比
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*/ public function disconnect() { // Close the connection. if (\is_callable([$this->connection, 'close'])) { $this->connection->close(); } parent::disconnect(); } */ public function disconnect() { // Close the connection. if (\is_callable([$this->connection, 'close'])) { $this->connection->close(); } parent::disconnect(); } * * @since 2.0.0 */ public function __destruct() { $this->disconnect(); } /** * Alter database's character set. *|
Error
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Error:
mysqli object is already closed
at /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318
at mysqli->close()
(/var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318)
at Joomla\Database\Mysqli\MysqliDriver->disconnect()
(/var/www/html/libraries/vendor/joomla/database/src/DatabaseDriver.php:496)
at Joomla\Database\DatabaseDriver->__destruct()
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