(PHP 5, PHP 7)
mysqli::real_connect -- mysqli_real_connect — Opens a connection to a mysql server
Nesne yönelimli kullanım
$host
[, string $username
[, string $passwd
[, string $dbname
[, int $port
[, string $socket
[, int $flags
]]]]]]] )Yordamsal kullanım
$link
[, string $host
[, string $username
[, string $passwd
[, string $dbname
[, int $port
[, string $socket
[, int $flags
]]]]]]] )Establish a connection to a MySQL database engine.
This function differs from mysqli_connect():
mysqli_real_connect() needs a valid object which has to be created by function mysqli_init().
With the mysqli_options() function you can set various options for connection.
There is a flags
parameter.
bağlantı
Sadece yordamsal tarz: mysqli_connect() veya mysqli_init() işlevinden dönen bir bağlantı tanıtıcısı.
host
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.
username
The MySQL user name.
passwd
If provided or NULL
, 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).
dbname
If provided will specify the default database to be used when performing queries.
port
Specifies the port number to attempt to connect to the MySQL server.
socket
Specifies the socket or named pipe that should be used.
Bilginize:
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 thehost
parameter.
flags
With the parameter flags
you can set different
connection options:
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) |
MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT |
Like MYSQLI_CLIENT_SSL , but disables validation of the provided
SSL certificate. This is only for installations using MySQL Native Driver and MySQL 5.6 or later.
|
Bilginize:
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.
Sürüm: | Açıklama |
---|---|
5.6.16 |
Added the MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT flag for MySQL Native Driver
|
Başarı durumunda TRUE
, başarısızlık durumunda FALSE
döner.
Örnek 1 mysqli::real_connect() example
Nesne yönelimli kullanım
<?php
$mysqli = mysqli_init();
if (!$mysqli) {
die('mysqli_init failed');
}
if (!$mysqli->options(MYSQLI_INIT_COMMAND, 'SET AUTOCOMMIT = 0')) {
die('Setting MYSQLI_INIT_COMMAND failed');
}
if (!$mysqli->options(MYSQLI_OPT_CONNECT_TIMEOUT, 5)) {
die('Setting MYSQLI_OPT_CONNECT_TIMEOUT failed');
}
if (!$mysqli->real_connect('localhost', 'my_user', 'my_password', 'my_db')) {
die('Connect Error (' . mysqli_connect_errno() . ') '
. mysqli_connect_error());
}
echo 'Success... ' . $mysqli->host_info . "\n";
$mysqli->close();
?>
Nesne yönelimli kullanım when extending mysqli class
<?php
class foo_mysqli extends mysqli {
public function __construct($host, $user, $pass, $db) {
parent::init();
if (!parent::options(MYSQLI_INIT_COMMAND, 'SET AUTOCOMMIT = 0')) {
die('Setting MYSQLI_INIT_COMMAND failed');
}
if (!parent::options(MYSQLI_OPT_CONNECT_TIMEOUT, 5)) {
die('Setting MYSQLI_OPT_CONNECT_TIMEOUT failed');
}
if (!parent::real_connect($host, $user, $pass, $db)) {
die('Connect Error (' . mysqli_connect_errno() . ') '
. mysqli_connect_error());
}
}
}
$db = new foo_mysqli('localhost', 'my_user', 'my_password', 'my_db');
echo 'Success... ' . $db->host_info . "\n";
$db->close();
?>
Yordamsal kullanım
<?php
$link = mysqli_init();
if (!$link) {
die('mysqli_init failed');
}
if (!mysqli_options($link, MYSQLI_INIT_COMMAND, 'SET AUTOCOMMIT = 0')) {
die('Setting MYSQLI_INIT_COMMAND failed');
}
if (!mysqli_options($link, MYSQLI_OPT_CONNECT_TIMEOUT, 5)) {
die('Setting MYSQLI_OPT_CONNECT_TIMEOUT failed');
}
if (!mysqli_real_connect($link, 'localhost', 'my_user', 'my_password', 'my_db')) {
die('Connect Error (' . mysqli_connect_errno() . ') '
. mysqli_connect_error());
}
echo 'Success... ' . mysqli_get_host_info($link) . "\n";
mysqli_close($link);
?>
Yukarıdaki örneklerin çıktısı:
Success... MySQL host info: localhost via TCP/IP
Bilginize:
MySQLnd daima sunucunun öntanımlı bir karakter kümesi olduğunu varsayar. Bu karakter kümesi, mysqlnd'nin kullanacağı uzlaşım/kimlik doğrulama bağlantısı sırasında gönderilir.
Libmysqlclient, ya my.cnf dosyasındaki öntanımlı karakter kümesini ya da mysqli_init() çağrısından sonraki ilk mysqli_real_connect() çağrısındaan önce çağrılan mysqli_options() işlevinde belirtilen karakter kümesini kullanır.