How to understand whether the date is in the interval or not?

Question

PHP

Good afternoon.

Tell me how to make a correct comparison of dates, check whether the current date is included in the time interval or not.

Thank you.

Answer 1

<?php
$checkDate1 = new DateTime("2020-06-25");
$checkDate2 = new DateTime("2020-01-30");
$startDate = new DateTime("2020-06-20 00:00:00");
$endDate = new DateTime("2020-06-30 23:59:59");

//bool(true)
var_dump(
    isDateBetweenDates($checkDate1, $startDate, $endDate)
);

//bool(false)
var_dump(
    isDateBetweenDates($checkDate2, $startDate, $endDate)
);

function isDateBetweenDates(DateTime $date, DateTime $startDate, DateTime $endDate) {
    return $date > $startDate && $date < $endDate;
}

Answer 2

If the date is in normal format, then just like any other value.
You can practice on cats first.
3 is in the range from 2 to 5? and 7?
after you write the code for these checks, it will be the same for dates.

Answer 3

$date = '17.03.2020';
$timestamp = strtotime($date);

$from = strtotime('19.03.2020');
$to = strtotime('23.05.2020');

if ($timestamp > $from && $timestamp < $to) {
    return true;
} else {
    return false;
}

Answer 4

Tell me how to make a correct comparison of dates, check if the current date is included in the time interval or not.

1. Convert dates to numeric form (UNIX timestamp)
2. Compare with start timestamp and end timestamp