PHP: mysqli::options - Manual (original) (raw)

mysqli_options

(PHP 5, PHP 7, PHP 8)

mysqli::options -- mysqli_options — Set options

Description

Object-oriented style

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

mysqli_options() should be called aftermysqli_init() and beforemysqli_real_connect().

Return Values

Returns [true](reserved.constants.php#constant.true) on success or [false](reserved.constants.php#constant.false) on failure.

Notes

Note:

MySQLnd always assumes the server default charset. This charset is sent during connection hand-shake/authentication, which mysqlnd will use.

Libmysqlclient uses the default charset set in themy.cnf or by an explicit call to mysqli_options() prior to calling mysqli_real_connect(), but after mysqli_init().

Found A Problem?

Guy Sartorelli ¶

2 years ago

The `MYSQLI_OPT_SSL_VERIFY_SERVER_CERT` seems to always fail, with `options()` always returning false.
Use the `MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT` flag with `real_connect()` instead.

php at darkain dot com ¶

7 years 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');
?>

fluppy ¶

18 years ago

Here es little example to create a SSL Connection

<?php

$db = mysqli_init();

/*
When you want so use a separate cnf <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>t</mi><mi>e</mi><mi>s</mi><mi>t</mi><mo>=</mo></mrow><annotation encoding="application/x-tex">test = </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.6151em;"></span><span class="mord mathnormal">t</span><span class="mord mathnormal">es</span><span class="mord mathnormal">t</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">=</span></span></span></span>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();

?>

puneetsharam9 at hotmail dot com ¶

3 years ago

With Objective Approach  
init of mysqli is depreciated from 8.1 it seem so
You could have to use an empty __construct()
So You have proper int and float 

class DB extends \mysqli {
   private function __construct(
           private $_user = DBUSER,
           private $_pass = DBPWD,
           private $_dbName = DBNAME,
           private $_dbHost = DBHOST,
   ) {
      parent::__construct();
      parent::options(MYSQLI_OPT_INT_AND_FLOAT_NATIVE, 1);
      parent::real_connect($this->_dbHost, <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>t</mi><mi>h</mi><mi>i</mi><mi>s</mi><mo>−</mo><msub><mo>&gt;</mo><mi>u</mi></msub><mi>s</mi><mi>e</mi><mi>r</mi><mo separator="true">,</mo></mrow><annotation encoding="application/x-tex">this-&gt;_user, </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.8444em;vertical-align:-0.15em;"></span><span class="mord mathnormal">t</span><span class="mord mathnormal">hi</span><span class="mord mathnormal">s</span><span class="mord">−</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel"><span class="mrel">&gt;</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.1514em;"><span style="top:-2.55em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mathnormal mtight">u</span></span></span></span><span class="vlist-s"></span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.2778em;"></span></span><span class="base"><span class="strut" style="height:0.625em;vertical-align:-0.1944em;"></span><span class="mord mathnormal" style="margin-right:0.02778em;">ser</span><span class="mpunct">,</span></span></span></span>this->_pass, $this->_dbName);
      }
   }

Procedural Man ¶