You don’t need to count every day in the month. You already know the first 28 days contain 20 weekdays no matter what. All you have to do is determine the last few days. Change the start value to 29. Then add 20 weekdays to your return value. function get_weekdays($m,$y) { $lastday = date(“t”,mktime(0,0,0,$m,1,$y)); $weekdays=0; … Read more
There seems to be quite a bit of confusion because, depending on what you are trying to accomplish, “the number of days between two dates” can mean at least two different things: The calendar distance between the two dates. The absolute distance between the two dates. As an example and to note the difference, assume … Read more
php supports c style date functions. You can add or substract date-periods with English-language style phrases via the strtotime function. examples… $Today=date(‘y:m:d’); // add 3 days to date $NewDate=Date(‘y:m:d’, strtotime(‘+3 days’)); // subtract 3 days from date $NewDate=Date(‘y:m:d’, strtotime(‘-3 days’)); // PHP returns last sunday’s date $NewDate=Date(‘y:m:d’, strtotime(‘Last Sunday’)); // One week from last sunday … Read more
The easiest way is to actually write two functions, one which converts the day to a number of days from a given start date, then another which converts back to a date. Once the date is expressed as a number of days, it’s trivial to add or subtract to it. You can find the algorithms … Read more
If you want logical calendar days, use DAYS.between() method from java.time.temporal.ChronoUnit: LocalDate dateBefore; LocalDate dateAfter; long daysBetween = DAYS.between(dateBefore, dateAfter); If you want literal 24 hour days, (a duration), you can use the Duration class instead: LocalDate today = LocalDate.now() LocalDate yesterday = today.minusDays(1); // Duration oneDay = Duration.between(today, yesterday); // throws an exception Duration.between(today.atStartOfDay(), … Read more