Calculating the difference in days between two Zend_Date objects

Chris M. — Wed, 18 Nov 2009 17:46:12 +0000

This just came up on #zftalk, and it appears that the information out there is either incomplete or incorrect, so I thought I’d just put out a simple solution. Here’s a simple way to calculate the difference between two Zend_Date objects (in days):

$jan1 = new Zend_Date('1.1.2009', Zend_Date::DATES);
echo "\nJanuary first: ", $jan1->toString();

$christmas = new Zend_Date('25.12.2009', Zend_Date::DATES);
echo "\nChristmas is on: ", $christmas->toString();

$diff = $christmas->sub($jan1);
echo "\nNumber of days: ", $diff / 60 / 60 / 24;

Chris Morrell » zend_date

Calculating the difference in days between two Zend_Date objects