How to add and subtract dates in Laravel

Laravel utilizes the Carbon package. It is an API extension for DateTime in PHP.

Carbon provides the add and sub methods. Both methods accept either a string or a integer and string.

use CarbonCarbon;
...

$now = Carbon::now();           // 2022-05-13 07:00:00

echo $now->add('61 seconds');   // 2022-05-13 07:01:01

echo $now->sub('1 day');        // 2022-05-14 07:01:01

echo $now->add('1 month');      // 2022-06-14 07:01:01

echo $now->add(1, 'year');      // 2023-06-14 07:01:01

Carbon also provies add and sub methods for each time field.

use CarbonCarbon;
...

$now = Carbon::now();           // 2022-05-13 07:00:00

echo $now->addCenturies(4);     // 2423-06-12 14:39:05
echo $now->subCenturies(4);     // 2022-05-13 07:00:00

echo $now->addYears(4);         // 2026-05-13 07:00:00
echo $now->subYears(4);         // 2022-05-13 07:00:00

echo $now->addMonths(5);         // 2022-10-13 07:00:00
echo $now->subMonths(5);         // 2022-05-13 07:00:00

// .. and so on for each field