What Does This Sql Statement Do?

[yoursurrogategod]

I have this piece of PHP code:

function OffsetDate($dayFraction, $date = false) {
if(!$date) {
$date = 'CURDATE()';
}

$fraction = $dayFraction * 24 * 3600;

return $date . ' + INTERVAL ' . $fraction . ' SECOND';
}

 

If I were to put in -28 as an input value (and only that value), this is the result that I would get:

"CURDATE() + INTERVAL 2419200 SECOND "

 

What will that SQL code do? What does it mean? I have to maintain this PHP code, but I don't quite understand how this SQL would work in a simulated environment.

[Jessica]

It would give you the sum of the current date plus that many seconds.

[Barand]

for example

 

http://forums.phpfreaks.com/topic/270336-how-would-i-go-about-adding-to-the-current-date-in-mysql/?do=findComment&comment=1390431