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<?php function ageMonths($dob) { //new date time $dob must be Y-m-d format $dobObject = DateTime::createFromFormat('Y-m-d',$dob); //current date $nowObject = new DateTime('2014-03-11'); //difference $diff = $nowObject->diff($dobObject); return "{$nowObject->format('Y-m-d')} - $dob = {$diff->y}-{$diff->m}-{$diff->d} / days: {$diff->days}"; } $date = new DateTime('2014-03-11'); while ($date > new DateTime('2014-01-01')) { $date->sub(new DateInterval('P1D')); var_dump(ageMonths($date->format('Y-m-d'))); }

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