Adding and Subtracting Dates and Times in PHP
During a recent project, I found the need to check if rows in a database were more than 6 hours old. So here's how to add and subtract dates and times in PHP...
This adds 2 days to the current date:
$date = date('Y-m-j'); $newdate = strtotime ( '+2 day' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
This adds 2 months to the current date:
$date = date('Y-m-j'); $newdate = strtotime ( '+2 month' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
This adds 2 years to the current date:
$date = date('Y-m-j'); $newdate = strtotime ( '+2 year' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
This subtracts 6 hours from the current date:
$date = date('Y-m-j'); $newdate = strtotime ( '-6 hour' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
This subtracts 10 minutes from the current date:
$date = date('Y-m-j'); $newdate = strtotime ( '-10 minute' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
If you want to change if from the current date, then simple replace the current date with the desired one...
This adds 1 year to the date 2012-11-25:
$date = date('2011-11-25'); $newdate = strtotime ( '+1 year' , strtotime ( $date ) ) ; $newdate = date ( 'Y-m-j' , $newdate ); echo $newdate;
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