//get Date diff as intervals
$d1 = new DateTime("2018-01-10 00:00:00");
$d2 = new DateTime("2019-05-18 01:23:45");
$interval = $d1->diff($d2);
$diffInSeconds = $interval->s; //45
$diffInMinutes = $interval->i; //23
$diffInHours = $interval->h; //8
$diffInDays = $interval->d; //21
$diffInMonths = $interval->m; //4
$diffInYears = $interval->y; //1
//or get Date difference as total difference
$d1 = strtotime("2018-01-10 00:00:00");
$d2 = strtotime("2019-05-18 01:23:45");
$totalSecondsDiff = abs($d1-$d2); //42600225
$totalMinutesDiff = $totalSecondsDiff/60; //710003.75
$totalHoursDiff = $totalSecondsDiff/60/60;//11833.39
$totalDaysDiff = $totalSecondsDiff/60/60/24; //493.05
$totalMonthsDiff = $totalSecondsDiff/60/60/24/30; //16.43
$totalYearsDiff = $totalSecondsDiff/60/60/24/365; //1.35
$date1 = '2000-01-25';
$date2 = '2010-02-20';
$ts1 = strtotime($date1);
$ts2 = strtotime($date2);
$year1 = date('Y', $ts1);
$year2 = date('Y', $ts2);
$month1 = date('m', $ts1);
$month2 = date('m', $ts2);
$diff = (($year2 - $year1) * 12) + ($month2 - $month1);
$from_date ='01-01-2013';
$to_date ='05-01-2013';
$from_date = new DateTime($from_date);
$to_date = new DateTime($to_date);
for ($date = $from_date; $date <= $to_date; $date->modify('+1 day')) {
echo $date->format('l') . "
";
}
$start = (new DateTime('2010-12-02'))->modify('first day of this month');
$end = (new DateTime('2012-05-06'))->modify('first day of next month');
$interval = DateInterval::createFromDateString('1 month');
$period = new DatePeriod($start, $interval, $end);
foreach ($period as $dt) {
echo $dt->format("Y-m") . "<br>
";
}
$paymentDate = date('Y-m-d');
$paymentDate=date('Y-m-d', strtotime($paymentDate));
//echo $paymentDate; // echos today!
$contractDateBegin = date('Y-m-d', strtotime("01/01/2001"));
$contractDateEnd = date('Y-m-d', strtotime("01/01/2012"));
if (($paymentDate >= $contractDateBegin) && ($paymentDate <= $contractDateEnd)){
echo "is between";
}else{
echo "NO GO!";
}
$start = new DateTime('2010-12-02');
$start->modify('first day of this month');
$end = new DateTime('2012-05-06');
$end->modify('first day of next month');
$interval = DateInterval::createFromDateString('1 month');
$period = new DatePeriod($start, $interval, $end);
foreach ($period as $dt) {
echo $dt->format("Y-m") . "<br>
";
}