note 113140 deleted from datetime.formats.relative by derick

Note Submitter: shkkmo at gmail dot com ---- Here is a fairly simple function I wrote to avoid the issues with adding/subtracting months that has been mentioned by cristinawithout and many others. I needed this function to be able handle monthly billing cycles properly. It handles positive and negative values for months. It also can be used to side step a similar issues for adding years on leap days (e.g. strtotime('2012/2/29 +1 year') by passing in multiples of 12 (e.g. addMonthsToTime(12, strtotime('2012/2/29')) <? function addMonthsToTime($numMonths = 1, $timeStamp = null){ $timeStamp === null and $timeStamp = time();//Default to the present $newMonthNumDays = date('d',strtotime('last day of '.$numMonths.' months', $timeStamp));//Number of days in the new month $currentDayOfMonth = date('d',$timeStamp); if($currentDayOfMonth > $newMonthNumDays){ $newTimeStamp = strtotime('-'.($currentDayOfMonth - $newMonthNumDays).' days '.$numMonths.' months', $timeStamp); } else { $newTimeStamp = strtotime($numMonths.' months', $timeStamp); } return $newTimeStamp; } ?>