PHP- Carbon Datetime DiffInSeconds and How to Group By Hour - php

Question

I'm calculating difference between 2 datetimes in seconds but I want to group them by hours. It should be like that.
This is how I'm getting difference between 2 dates.
$date_diff = $first->created_at->diffInSeconds($second->created_at);
And For example first time is 09:47:20 and next one is 11:47:50 I need the group them by hour like this.
In 09:00 = 12.40 Minutes
In 10:00 = 60.00 Minutes
In 11:00 = 47.50 Minutes
How can I do that ? And what you'll suggest for this ?
Thanks

Answer 1

You can check out the code below.
Keep in mind that it works as expected if the start time <= the end time.
Also, there's room for improvement, like extracting logic to separate functions or adding trailing/leading zeros where you'd need them, but it should get you started.
$start = '09:47:20';
$end = '11:47:50';
$startTime = Carbon::createFromFormat('H:i:s', $start);
$endTime = Carbon::createFromFormat('H:i:s', $end);
$startHour = $startTime->hour; // 9
$endHour = $endTime->hour; // 11
$hourRange = range($startHour, $endHour); // array(9, 10, 11)
if (count($hourRange) === 1) {
// start and end time share the same hour
$hourRange = array($startHour, $endHour);
}
$lastIndex = count($hourRange) - 1;
$diffGrouped = array();
foreach ($hourRange as $index => $hour) {
if ($index === 0) {
// start hour has the next full hour - calculate the difference
$nextFullHour = $startHour + 1;
$nextFullHourTime = Carbon::createFromFormat('H', $nextFullHour);
$minutes = $startTime->diff($nextFullHourTime)->format('%i.%s');
} else if ($index === $lastIndex) {
// end hour is its own "previous full hour"
$previousFullHourTime = Carbon::createFromFormat('H', $endHour);
$minutes = $endTime->diff($previousFullHourTime)->format('%i.%s');
} else {
// everything between the start and the end hour
$minutes = '60.00';
}
$diffGrouped[] = array(
'hour' => $hour,
'minutes' => $minutes
);
}
dd($diffGrouped);
/*
array:3 [
0 => array:2 [
"hour" => 9
"minutes" => "12.40"
]
1 => array:2 [
"hour" => 10
"minutes" => "60.00"
]
2 => array:2 [
"hour" => 11
"minutes" => "47.50"
]
]
*/