Quarter.php

Retrieve start and end dates for calendar or fiscal quarters for any year with ease! The package is an extension of the Period class from gtmassey/period which is used in the gtmassey/analytics package as well. You can find this code on Github.

Installation

You can install the package via composer:

composer require gtmassey/quarter

This package is an extension of the gtmassey/period package. You can find the documentation for that package here.

Usage

Basic Usage

The package provides a Quarter class which contains static methods for each quarter of a year, and additional methods that can be chained on that allow for mutations of the quarter to specific years, calendar types, and dates.

//Jan 1, YYYY - Mar 31, YYYY
Quarter::first();

//Apr 1, YYYY - Jun 30, YYYY
Quarter::second();

//Jul 1, YYYY - Sep 30, YYYY
Quarter::third();

//Oct 1, YYYY - Dec 31, YYYY
Quarter::fourth();

As an extension of the Period class from gtmassey/period, the resulting Quarter object is structured the same way

Gtmassey\Quarter\Quarter {#6221
  +startDate: Carbon\CarbonImmutable @1672531200 {#6224
    date: 2023-01-01 00:00:00.0 UTC (+00:00),
  },
  +endDate: Carbon\CarbonImmutable @1680307199 {#6220
    date: 2023-03-31 23:59:59.999999 UTC (+00:00),
  },
}

Specifying Years

If you want to specify the year of the quarter, you can chain the year() method on the quarter. Note that you have to format the year as YYYY. If you don’t, it will take the year literally, i.e. the year 0020.

//Jan 1, 2020 - Mar 31, 2020 
Quarter::first()->year(2020); 

//Jan 1, 0020 - Mar 31, 0020 
Quarter::first()->year(20); 

//Jan 1, 1995 - Mar 31, 1995 
Quarter::first()->year(1995);

Changing the Resulting Object

By default, the Quarter class returns a Quarter object. You can default to the parent Period object by calling the asPeriod() method:

Quarter::first()->asPeriod();

which will result in an instance of Period like so:

Gtmassey\Period\Period {
  +startDate: Carbon\CarbonImmutable @1672531200 {
    date: 2023-01-01 00:00:00.0 UTC (+00:00),
  },
  +endDate: Carbon\CarbonImmutable @1680307199 {
    date: 2023-03-31 23:59:59.999999 UTC (+00:00),
  },
}

Changing Calendar Types

So far, the quarter methods have been assuming a calendar year for the quarter dates. If you want to use the fiscal year in which the first quarter starts on July 1, you can chain the fiscal() method:

//July 1, YYYY - September 30, YYYY 
Quarter::first()->fiscal();

You can chain the year and fiscal methods together:

//July 1, 1995 - September 30, 1995 
Quarter::first()->year(1995)->fiscal();

and if you want the resulting object to be an instance of the parent Period class, you can chain the asPeriod() method:

//July 1, 1995 - September 30, 1995 
Quarter::first()->year(1995)->fiscal()->asPeriod();

Start and End Dates Only

Sometimes you only need to access the start and end dates of a given quarter, without accessing the entire range. To do that, simply add the startDate() or endDate() method to the chain:

//July 1, 2020 
Quarter::third()->year(2020)->startDate();

//March 31, 2019
Quarter::first()->year(2019)->endDate();

Past and Future Quarters:

If you have a given quarter object, and you want to get the next quarter, you can use the next() method:

//Jan 1, 2020 - Mar 31, 2020 
$quarter = Quarter::first()->year(2020); 

//Apr 1, 2020 - Jun 30, 2020
$next = $quarter->next(); 

To get the previous quarters from a given Quarter object, use the previous() method:

//Jan 1, 2020 - Mar 31, 2020 
$quarter = Quarter::first()->year(2020); 

//Oct 1, 2019 - Dec 31, 2019
$previous = $quarter->previous(); 

Finally, you can access the current quarter by calling the current() method:

//return the dates for the current quarter, 
//regardless of calendar or fiscal dates.
$current = Quarter::current(); 

Note that if you try to use the fiscal() method on the current() method, it will not throw an exception, but it will return quarter dates six months ahead. This is because Quarter::first() assumes January 1st for the start date, and Quarter::first()->fiscal() adds six months to achieve the July 1 start date.

This can lead to some unexpected results. If you wish to calculate the current fiscal quarter, you can simply use current() to get the current quarter’s start and end dates, and then you can use the next() and previous() methods to traverse throughout the quarters.

Laravel Note:

The parent Period class is written specifically for Laravel because it is an extracted package from the gtmassey/laravel-analytics package. However, the Quarter class does not need Laravel to function. If you want to use the Quarter class in Laravel, you can add the class to your config/app.php aliases array:

'aliases' => Facade::defaultAliases()->merge([
    // 'Example' => App\Facades\Example::class,
    'Quarter' => Gtmassey\Quarter\Quarter::class,
])->toArray(),

Testing

To test the package, navigate to the package directory and run:

composer test