PHP 7.1.21 Released

mysqli::options

mysqli_options

(PHP 5, PHP 7)

mysqli::options -- mysqli_optionsSet options

Açıklama

Nesne yönelimli kullanım

bool mysqli::options ( int $option , mixed $value )

Yordamsal kullanım

bool mysqli_options ( mysqli $link , int $option , mixed $value )

Used to set extra connect options and affect behavior for a connection.

This function may be called multiple times to set several options.

mysqli_options() should be called after mysqli_init() and before mysqli_real_connect().

Değiştirgeler

bağlantı

Sadece yordamsal tarz: mysqli_connect() veya mysqli_init() işlevinden dönen bir bağlantı tanıtıcısı.

option

The option that you want to set. It can be one of the following values:

Valid options
Name Description
MYSQLI_OPT_CONNECT_TIMEOUT connection timeout in seconds (supported on Windows with TCP/IP since PHP 5.3.1)
MYSQLI_OPT_LOCAL_INFILE enable/disable use of LOAD LOCAL INFILE
MYSQLI_INIT_COMMAND command to execute after when connecting to MySQL server
MYSQLI_READ_DEFAULT_FILE Read options from named option file instead of my.cnf
MYSQLI_READ_DEFAULT_GROUP Read options from the named group from my.cnf or the file specified with MYSQL_READ_DEFAULT_FILE.
MYSQLI_SERVER_PUBLIC_KEY RSA public key file used with the SHA-256 based authentication.
MYSQLI_OPT_NET_CMD_BUFFER_SIZE The size of the internal command/network buffer. Only valid for mysqlnd.
MYSQLI_OPT_NET_READ_BUFFER_SIZE Maximum read chunk size in bytes when reading the body of a MySQL command packet. Only valid for mysqlnd.
MYSQLI_OPT_INT_AND_FLOAT_NATIVE Convert integer and float columns back to PHP numbers. Only valid for mysqlnd.
MYSQLI_OPT_SSL_VERIFY_SERVER_CERT

value

The value for the option.

Dönen Değerler

Başarı durumunda TRUE, başarısızlık durumunda FALSE döner.

Sürüm Bilgisi

Sürüm: Açıklama
5.5.0 The MYSQLI_SERVER_PUBLIC_KEY and MYSQLI_SERVER_PUBLIC_KEY options were added.
5.3.0 The MYSQLI_OPT_INT_AND_FLOAT_NATIVE, MYSQLI_OPT_NET_CMD_BUFFER_SIZE, MYSQLI_OPT_NET_READ_BUFFER_SIZE, and MYSQLI_OPT_SSL_VERIFY_SERVER_CERT options were added.

Örnekler

See mysqli_real_connect().

Notlar

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.

Ayrıca Bakınız

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User Contributed Notes 3 notes

up
4
fluppy
11 years ago
Here es little example to create a SSL Connection

<?php

$db
= mysqli_init();

/*
When you want so use a separate cnf
$test = $db->options(MYSQLI_EAD_DEFAULT_FILE,'myother.cnf');
*/

$db->ssl_set('server-key.pem','server-cert.pem',
'cacert.pem',NULL,NULL);

$db->real_connect('localhost','root','','mydb');

//Here some query

$db->close();

?>
up
1
php at darkain dot com
30 days ago
There is an undocumented option: MYSQLI_OPT_READ_TIMEOUT. This is similar to MYSQLI_OPT_CONNECT_TIMEOUT in theory, but has a slightly different application. Connection timeout only specifies the wait time for the initial TCP connection. Once that is created, the timeout no longer applies. Read timeout, however, is from the time the TCP connection is created until the first packet of actual data is received. There are instances where a TCP connection can be established, but the MySQL server stalls indefinitely, preventing execution from ever returning to PHP. Specifying a read timeout alleviates this condition, whereas connect timeout wouldn't.

If the MYSQLI_OPT_READ_TIMEOUT constant isn't defined, it is still supported on versions where that isn't the case. You can define it yourself in older PHP versions with the following code.

<?php
if (!defined('MYSQLI_OPT_READ_TIMEOUT')) {
   
define ('MYSQLI_OPT_READ_TIMEOUT', 11);
}
?>

You can then use read timeout the same way you could a connect timeout as follows. Please note that since these are two different timeout values for two different parts of the entire connection process, the timeouts do stack (eg: 10 seconds connect timeout + 10 seconds read timeout = maximum possible timeout of 20 seconds)

<?php
//create the object
$connection = mysqli_init();

//specify the connection timeout
$connection->options(MYSQLI_OPT_CONNECT_TIMEOUT, 10);

//specify the read timeout
$connection->options(MYSQLI_OPT_READ_TIMEOUT, 10);

//initiate the connection to the server, using both previously specified timeouts
$connection->real_connect('server', 'user', 'pass', 'database');
?>
up
0
king at bobfish dot org
10 years ago
Example on using mysqli_options to increase size of max_allowed_packet for working with big blobs.

function dbConnect()
{
   $user = 'jomama';
   $pass = 'cartoon';
   $dbName = 'LifeCycle';
   $host = 'localhost';

   $mysqli = mysqli_init();
   mysqli_options($mysqli,MYSQLI_READ_DEFAULT_GROUP,
                                    "max_allowed_packet=50M");
   mysqli_real_connect($mysqli,$host, $user, $pass,$dbName)
                  or die ('<P>Unable to connect</P>');

   return $mysqli;
}
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