In PHP, what corresponds to mysql.connect_timeout in MySQLi?

We recently ported some code we have to use PHP's MySQLi extension ins开发者_JS百科tead of the regular mysql. This code connects to a database that occasionally might not be responding, so we set this variable on PHP.ini:

mysql.connect_timeout = 3

That way if it takes more than 3 seconds to connect to that database, it simply gives up. However this doesn't seem to work for MySQLi. What would be the corresponding setting for MySQLi?

Thank you in advance.

You should use MYSQLI_OPT_CONNECT_TIMEOUT as reported here.

Here's a small example from this thread:

class mysqli2 extends mysqli
{
    public function __construct( $host, $user, $pass, $db, $port=3306 )
    {
        parent::init();
        parent::options( MYSQLI_OPT_CONNECT_TIMEOUT, 5 );
        parent::real_connect( $host, $user, $pass, $db, $port );
    }
}