How do I shorten the MySQL Connect Time Out - Failover Scenario - php

Question

I have a fail-over scenario in a Wordpress plugin, where a PHP script on my web server tries to connect to a backup database if the production one is offline.
Currently the fallback seems to take up to 60 seconds. Is this the PHP default? How would I set the time out to something like 10 seconds?
Here is the relevant portion of the script...
try
{
$DBblue = new \PDO('mysql:host='.$samhost.';'.'dbname='.$DBblue, $samuser, $sampass);
$DBgreen = new \PDO('mysql:host='.$samhost.';'.'dbname='.$DBgreen, $samuser, $sampass);
}
catch (\PDOException $pde)
{
// Fallback Database connection
$althost = get_option('fallback_host');
$altuser = get_option('fallback_user');
$altpass = get_option('fallback_password');
$DBblue = new \PDO('mysql:host='.$althost.';'.'dbname='.$DBblue, $altuser, $altpass);
$DBgreen = new \PDO('mysql:host='.$althost.';'.'dbname='.$DBgreen, $altuser, $altpass);
}

Answer 1

Try this:
$DBblue = new \PDO('mysql:host='.$samhost.';'.'dbname='.$DBblue, $samuser, $sampass, array(
PDO::ATTR_TIMEOUT => "10",
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
));
$DBgreen = new \PDO('mysql:host='.$samhost.';'.'dbname='.$DBgreen, $samuser, $sampass, array(
PDO::ATTR_TIMEOUT => "10",
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
));
PDO::ATTR_TIMEOUT => "10" ->>> Set timeout to 10 seconds.
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION ->>> Throw exception.
More Information : http://php.net/manual/en/pdo.setattribute.php