I've had situations where database connections appeared to persist following php execution. So, now, my __destructor function explicitly contains a $cxn->close(). It hurts nothing, and helps avoid memory leaks.
mysqli::close
mysqli_close
(PHP 5)
mysqli::close -- mysqli_close — Closes a previously opened database connection
Опис
Об'єктно-орієнтований стиль
bool mysqli::close
( void
)
Процедурний стиль
Closes a previously opened database connection.
Open non-persistent MySQL connections and result sets are automatically destroyed when a PHP script finishes its execution. So, while explicitly closing open connections and freeing result sets is optional, doing so is recommended. This will immediately return resources to PHP and MySQL, which can improve performance. For related information, see freeing resources
Параметри
-
link -
Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()
Значення, що повертаються
Повертає TRUE в успішному випадку або FALSE в разі помилки.
Приклади
See mysqli_connect().
Примітки
Зауваження:
mysqli_close() will not close persistent connections. For additional details, see the manual page on persistent connections.
Прогляньте Також
- mysqli::__construct() - Open a new connection to the MySQL server
- mysqli_init() - Initializes MySQLi and returns a resource for use with mysqli_real_connect()
- mysqli_real_connect() - Opens a connection to a mysql server
- mysqli_free_result() - Frees the memory associated with a result
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User Contributed Notes 1 note
php at dafydd dot com ¶
15 years ago
