- floor: documentation ( source)
- date_default_timezone_set: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
date_default_timezone_set('UTC');
function dateDiff($startdate, $enddate) {
$first = $startdate < $enddate ? $startdate : $enddate;
$second = $startdate < $enddate ? $enddate : $startdate;
$inbetween = $second - $first;
$firsttemp = $first;
$months = 0;
$days = 0;
while(TRUE) {
if($firsttemp + 86400 * date('t', $firsttemp) <= $second) {
$months += 1;
$firsttemp += 86400 * date('t', $firsttemp);
} else {
if($second - $firsttemp >= 86400) {
$days = floor(($second - $firsttemp) / 86400);
}
break;
}
}
$years = floor($months / 12);
$months = $months % 12;
$hours = floor($inbetween / 60 / 60 % 24);
$minutes = floor($inbetween / 60 % 60);
$seconds = $inbetween % 60;
$dateObj = new stdClass();
$dateObj->y = $years;
$dateObj->m = $months;
$dateObj->d = $days;
$dateObj->h = $hours;
$dateObj->i = $minutes;
$dateObj->s = $seconds;
$dateObj->days = floor($inbetween / 86400);
return $dateObj;
}
$str1 = "1970-01-01";
$str2 = "2009-01-01";
$tempdate1 = $str1;
$n = 0;
$mydate = dateDiff(strtotime($str1), strtotime($str2));
$string = "(" . $mydate->days . ") difference " . $mydate->y . " years, " . $mydate->m . " months, " . $mydate->d . " days";
echo $string;
$n += 321;
$tempdate1 = $str1 . " +" . $n . " sec";