Php mysqli real connect () function

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(PHP 5)

mysqli_real_connect

(no version information, might be only in CVS)

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

Syntax

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:

Table 1. Supported flags

Name	Syntax
`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)

Note: 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.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example 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();
?>

Example 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);
?>

The above example will output:

Connection: Localhost via UNIX socket

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Php mysqli real connect syntax tutorial

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