find days with name between two dates in php

1//get Date diff as intervals 
2$d1 = new DateTime("2018-01-10 00:00:00");
3$d2 = new DateTime("2019-05-18 01:23:45");
4$interval = $d1->diff($d2);
5$diffInSeconds = $interval->s; //45
6$diffInMinutes = $interval->i; //23
7$diffInHours   = $interval->h; //8
8$diffInDays    = $interval->d; //21
9$diffInMonths  = $interval->m; //4
10$diffInYears   = $interval->y; //1
11
12//or get Date difference as total difference
13$d1 = strtotime("2018-01-10 00:00:00");
14$d2 = strtotime("2019-05-18 01:23:45");
15$totalSecondsDiff = abs($d1-$d2); //42600225
16$totalMinutesDiff = $totalSecondsDiff/60; //710003.75
17$totalHoursDiff   = $totalSecondsDiff/60/60;//11833.39
18$totalDaysDiff    = $totalSecondsDiff/60/60/24; //493.05
19$totalMonthsDiff  = $totalSecondsDiff/60/60/24/30; //16.43
20$totalYearsDiff   = $totalSecondsDiff/60/60/24/365; //1.35

1$startDate = new DateTime("2019-10-27");
2$endDate = new DateTime("2020-04-11");
3
4$difference = $endDate->diff($startDate);
5echo $difference->format("%a");

1$from_date ='01-01-2013';
2$to_date ='05-01-2013';
3
4$from_date = new DateTime($from_date);
5$to_date = new DateTime($to_date);
6
7for ($date = $from_date; $date <= $to_date; $date->modify('+1 day')) {
8  echo $date->format('l') . "\n";
9}