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Open a persistent connection to a MySQL server:
Open a persistent connection to a MySQL server - Manual in BULGARIAN
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Функции за работа с MySQL
PHP Manual

mysql_pconnect

(PHP 4, PHP 5)

mysql_pconnect — Open a persistent connection to a MySQL server

Описание

resource mysql_pconnect ([ string $server = ini_get("mysql.default_host") [, string $username = ini_get("mysql.default_user") [, string $password = ini_get("mysql.default_password") [, int $client_flags ]]]] )

Establishes a persistent connection to a MySQL server.

mysql_pconnect() acts very much like mysql_connect() with two major differences.

First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection.

Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use (mysql_close() will not close links established by mysql_pconnect()).

This type of link is therefore called 'persistent'.

Параметри

server

The MySQL server. It can also include a port number. e.g. "hostname:port" or a path to a local socket e.g. ":/path/to/socket" for the localhost.

If the PHP directive mysql.default_host is undefined (default), then the default value is 'localhost:3306'

username

The username. Default value is the name of the user that owns the server process.

password

The password. Default value is an empty password.

client_flags

The client_flags parameter can be a combination of the following constants: 128 (enable LOAD DATA LOCAL handling), MYSQL_CLIENT_SSL, MYSQL_CLIENT_COMPRESS, MYSQL_CLIENT_IGNORE_SPACE or MYSQL_CLIENT_INTERACTIVE.

Връщани стойности

Returns a MySQL persistent link identifier on success, or FALSE on failure.

Дневник на промените

Версия Описание
4.3.0 Added the client_flags parameter.

Бележки

Забележка: Note, that these kind of links only work if you are using a module version of PHP. See the Persistent Database Connections section for more information.

Предупреждение

Using persistent connections can require a bit of tuning of your Apache and MySQL configurations to ensure that you do not exceed the number of connections allowed by MySQL.

Забележка: You can suppress the error message on failure by prepending a @ to the function name.

Вж. също

Функции за работа с MySQL
PHP Manual

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