Compzone.Org :: Podręcznik PHP :: mysqli_real_connect

Podręcznik PHP
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mysqli_real_connect

(PHP 5)

mysqli_real_connect

(no version information, might be only in CVS)

mysqli->real_connect -- Opens a connection to a mysql server

Description

Procedural style

bool mysqli_real_connect ( mysqli link [, string hostname [, string username [, string passwd [, string dbname [, int port [, string socket [, int flags]]]]]]] )

Object oriented style (method)

class mysqli {

bool real_connect ( [string hostname [, string username [, string passwd [, string dbname [, int port [, string socket [, int flags]]]]]]] )

}

mysqli_real_connect() attempts to establish a connection to a MySQL database engine running on hostname.

This function differs from mysqli_connect():

mysqli_real_connect() needs a valid object which has to be created by function mysqli_init()
With function mysqli_options() you can set various options for connection.

With the parameter flags you can set different connection options:

Tabela 1. Supported flags

Name	Description
`MYSQLI_CLIENT_COMPRESS`	Use compression protocol
`MYSQLI_CLIENT_FOUND_ROWS`	return number of matched rows, not the number of affected rows
`MYSQLI_CLIENT_IGNORE_SPACE`	Allow spaces after function names. Makes all function names reserved words.
`MYSQLI_CLIENT_INTERACTIVE`	Allow `interactive_timeout` seconds (instead of `wait_timeout` seconds) of inactivity before closing the connection
`MYSQLI_CLIENT_SSL`	Use SSL (encryption)

Notatka: For security reasons the MULTI_STATEMENT flag is not supported in PHP. If you want to execute multiple queries use the mysqli_multi_query() function.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu, FALSE w przypadku porażki.

Patrz także

mysqli_connect(), mysqli_init(), mysqli_options(), mysqli_ssl_set() i mysqli_close().

Przykłady

Przykład 1. Object oriented style

<?php

                
/* create a connection object which is not connected */

                $mysqli = mysqli_init();

                
/* set connection options */
$mysqli->options(MYSQLI_INIT_COMMAND, "SET AUTOCOMMIT=0");

                $mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 5);


                
/* connect to server */
$mysqli->real_connect('localhost', 'my_user', 'my_password', 'world');


                
/* check connection */
if (mysqli_connect_errno()) {


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


                    exit();

                }

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


                
$mysqli->close();
?>

Przykład 2. Procedural style

<?php

                
/* create a connection object which is not connected */

                $link = mysqli_init();

                
/* set connection options */
mysqli_options($link, MYSQLI_INIT_COMMAND, "SET AUTOCOMMIT=0");

                mysqli_options($link, MYSQLI_OPT_CONNECT_TIMEOUT, 5);


                
/* connect to server */
mysqli_real_connect($link, 'localhost', 'my_user', 'my_password', 'world');


                
/* check connection */
if (mysqli_connect_errno()) {


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


                    exit();

                }

                
printf ("Connection: %s\n.", mysqli_get_host_info($link));


                
mysqli_close($link);
?>

Powyższy przykład wyświetli:

Connection: Localhost via UNIX socket

Poprzedni	Spis treści	Następny
mysqli_query	Początek rozdziału	mysqli_real_escape_string