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PHP. Руководство по PHP. 2005

mysqli_connect

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mysqli_connect

(PHP 5)mysqli_connect

(no version information, might be only in CVS)mysqli() -- Open a new connection to the MySQL server

Description

Procedural stylemysqli mysqli_connect ([string host [, string username [, string passwd [, string dbname [, int port [, string socket]]]]]])

Object oriented style (constructor):class mysqli {

__construct ([string host [, string username [, string passwd [, string dbname [, int port [, string socket]]]]]])

}

The mysqli_connect() function attempts to open a connection to the MySQL Server

running on host which can be either a host name or an IP address. Passing the

NULL value or the string "localhost" to this parameter, the local host is assumed. When possible,

pipes will be used instead of the TCP/IP protocol. If successful, the mysqli_connect()

will return an object representing the connection to the database, or FALSE on failure.

The username and password parameters specify the

username and password under which to connect to the MySQL server. If the password is not provided

(the NULL value is passed), the MySQL server will attempt to authenticate the user against those

user records which have no password only. This allows one username to be used with different

permissions (depending on if a password as provided or not).

The dbname parameter if provided will specify the default database to be

used when performing queries.

The port and socket parameters are used in

conjunction with the host parameter to further control how to connect

to the database server. The port parameter specifies the port number to

attempt to connect to the MySQL server on, while the socket parameter

specifies the socket or named pipe that should be used.

Замечание:

Specifying the socket parameter will not explicitly determine the type

of connection to be used when connecting to the MySQL server. How the connection is made to the

MySQL database is determined by the host parameter.

Возвращаемые значения

Returns a object which represents the connection to a MySQL Server or

FALSE if the connection failed.

Примеры

Пример 1. Object oriented style

<?php

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */

if (mysqli_connect_errno()){

printf("Connect failed: %s\n", mysqli_connect_error());

exit();

}

printf("Host information: %s\n", $mysqli->host_info);

/* close connection */

$mysqli->close();

?>

Пример 2. Procedural style

<?php

$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */

if (!$link){

printf("Connect failed: %s\n", mysqli_connect_error());

exit();

}

printf("Host information: %s\n", mysqli_get_host_info($link));

/* close connection */

mysqli_close($link);

?>

Результат выполнения данного примера:

Host information: Localhost via UNIX socket

Пред.

Начало

След.

mysqli_connect_error

Уровень выше

mysqli_data_seek

Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.

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