Question

I have MySQL column for start date(timestamp) and end date(timestamp) and 3rd column of paying_period (3 months or 6 months) i want to get 3 month(paying_period) difference in full period.

Example start date is 1-jan-2012 and end date is 1-jan-2013. I want 3 month period in that, like 1st installment goes on1-mar-2012,2nd on1-june-2012` and so on.

How can i do it?

Answer 1

DateTime makes working with dates easy

$date = new DateTime('1-jan-2012'); // Start date
$date->modify('+3 months');         // 3 months later
echo $date->getTimestamp();         // timestamp
$date->modify('+3 months');         // 6 mnths later
echo $date->getTimestamp();         // timestamp
$date->modify('+3 months');         // 9 months later
echo $date->getTimestamp();         // timestamp