I am using the array_push and array_unshift methods but when I order it, it combines the 12-2020 in the year 2021, here is an example.
foreach ($lostOpportunities_ as $key => $value) {
$existDate = array_search($value->fecha, $datesClosed);
if ($existDate === false) {
if (Carbon::parse($value->fecha)->format('Y') == '2020') {
array_unshift($datesClosed, $value);
} else {
array_push($datesClosed, $value->fecha);
}
}
$_lostOpportunitiesData[$value->fecha] = $value->total;
}
$datesClosed:
Array
(
[0] => 05-01-2021
[1] => 06-01-2021
[2] => 07-01-2021
[3] => 11-01-2021
[4] => 12-01-2021
[5] => 13-01-2021
[6] => 14-01-2021
[7] => 15-01-2021
[8] => 18-01-2021
[9] => 19-01-2021
[10] => 20-01-2021
[11] => 21-01-2021
[12] => 22-12-2020
[13] => 23-12-2020
[14] => 28-12-2020
[15] => 29-12-2020
[16] => 30-12-2020
[17] => 08-01-2021
)
Sorting:
sort($datesClosed, SORT_STRING);
Output:
Array
(
[0] => 05-01-2021
[1] => 06-01-2021
[2] => 07-01-2021
[3] => 08-01-2021
[4] => 11-01-2021
[5] => 12-01-2021
[6] => 13-01-2021
[7] => 14-01-2021
[8] => 15-01-2021
[9] => 18-01-2021
[10] => 19-01-2021
[11] => 20-01-2021
[12] => 21-01-2021
[13] => 22-12-2020
[14] => 23-12-2020
[15] => 28-12-2020
[16] => 29-12-2020
[17] => 30-12-2020
)
As you can see, the ones from December 2020 are at the end, but they should be at the beginning and before 01-2021.
You could do this using usort on your array of date strings. You would compare them e.g. with strotime($a) <=> strtotime($b), or array_reverse(explode('-', $a)) <=> ... $b on all dates. However, this approach would quickly become a very expensive operation, given the cartesian(?) amount of conversions that would be made when each item is compared, unless the conversions were somehow cached. I wouldn't go down this path here.
In general, it's better to sort your data when the data is still in a more readily comparable format, where at all possible. I don't think you can just usort Carbon objects though (without some overhead, as above, anyway!), so here's a no-frills solution that performs well.
Assuming the array keys hold no particular meaning for you, you can generate timestamps for keys. You can then scrap all the unshift/push logic, and simply do something like this:
$timestamp = Carbon::parse($value->fecha)->timestamp;
$times[$timestamp] = $value;
This will give you an array (here, $times) of date strings with timestamp-indexes. (Adapt the variables to fit your case.) Then it's as trivial as applying ksort($times) to the resulting array, ie. sorting the array by key. Your date strings will be in chronological order.