如何在php中创建时间列表？

Question

I have x.

x is minutes.

I have a string start_time like: 7:00

And I have a string end_time like: 14:00

how can print a list of time with increase x minutes for each loop?

I want print something like this:

if x = 30

7:00 - 7:30
7:30 - 8:00
...
13:30 - 14:00

I try do it with math functions in php like this:

$time = '7:00';
$mm = $hh = 0;
$str = explode(":",$time);
if(($str[1]+ $x) > 60)
{
...
}

but it there a more simple method? can date function in php do it?

Answer 1

You can use DatePeriod together with DateInterval to achieve this.

Create two DateTime intervals with your start and end times, and a DateInterval instance with the number of minutes you need. Then, create a DatePeriod with this information, and iterate over it to show the resulting times:

<?php
$minutes = 15;
$start = "07:00";
$end = "14:00";
$startDate = DateTime::createFromFormat("H:i", $start);
$endDate = DateTime::createFromFormat("H:i", $end);
$interval = new DateInterval("PT".$minutes."M");
$dateRange = new DatePeriod($startDate, $interval, $endDate);
foreach ($dateRange as $date) {
    echo $date->format("H:i")."<br>";
}

Demo

Result

07:00

07:15

07:30

07:45

08:00

08:15

08:30

08:45

09:00

09:15

09:30

09:45

10:00

10:15 // etc