A small php library for date converting between multiple calendar
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Intl. Date

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PHP Library for Converting Date to Multiple Calendars


The preferred way to install this extension is through composer.

Either run

composer require --prefer-dist meysampg/intldate "*"

or add

"meysampg/intldate": "*"

to the require section of your composer.json file.

Also easily you can Download and use it.


Once the library is installed, simply use it in your php file:

use meysampg\intldate\IntlDateTrait;

and use it on your desired class:


namespace foo\bar;

use meysampg\intldate\IntlDateTrait;

class Bar
  use IntlDateTrait;
  // Some codes are here!
  echo $this->fromGregorian([2017, 9, 7, 12, 23, 45])->toPersian('en')->asDateTime();


IntlDateTrait has a simple logic for naming methods: "A date starts from origin and ends to final. So all methods (setters and getters) that are related to incoming date are named by setOriginXXXX and getOriginXXXX (which XXXX shows a feature of time, like timezone or locale) and all methods that are corresponded to outgoing date are regarded as setFinalXXXX and getFinalXXXX. A list of available methods can be find in bottom of this document.


At first I must note that incoming date must be an array in this form:

    year, // 2016
    month, // 2
    day, // 23
    hour, // 12
    minute, // 23
    second // 4

Currently, the library CAN'T parse a string as time (See ToDo section), so before converting a date, you MUST parse it on a acceptable array (It can be done with preg_match or each tools that you know). Now you can easily use IntlDateTrait::from($datetimeArray, $locale, $calendar) for importing an incoming date and IntlDateTrait::to($locale, $calendar) for converting it to another system. We disccuesed about $datetimeArray in the first of this section, it's our date for converting on a accepted format. $locale is the regional information of a language. For example for The English it's en, for Farsi it's fa, for Spanish it's es and so on. You can find a complete list of them at this link. And finally calendar is your desired date system. This library use the Intl* family of php and so you can use all supported calendar in ICU project. Now this calendars are supported:

  • persian
  • gregorian
  • japanese
  • buddhist
  • chinese
  • indian
  • islamic
  • hebrew
  • coptic
  • ethiopic

It's better to use their handler in code instead of using direct name. These handlers are:

// Use them in `self::$CAL_CALENDAR, for example `$calendar = self::$CAL_HEBREW`.


There are some shorthands for converting dates in a painless way (Yeah! With all of my proud, I'm a Lazy man :D). This shorthands are formatted as fromYyyy() for incoming date function and toZzzz() for outgoing date function such that, Yyyy and Zzzz are the name of calendars. For incoming function, the signature is fromYyyy($datetimeArray, $locale = 'en_US', $timezone = 'UTC) and for outgoing is toZzzz($locale = 'fa', $timezone = 'UTC'). Use $locale in incoming function if you have non-latin digits and use it on outgoing function, if you wanna show the converted date by latin digits (Based on region of calendar, $locales are defined, for example the default locate of Persian calendar for outgoing function is fa). Also with changing $timezone in both fromYyyy and ToZzzz functions, you can convert a datetime from one to another. Shorthands are listed in table.

Incoming Outgoing
fromPersian toPersian
fromJapanese toJapanese
fromBuddhist toBuddhist
fromChinese toChinese
fromIndian toIndian
fromIslamic toIslamic
fromHebrew toHebrew
fromCoptic toCoptic
fromEthiopic toEthiopic
fromGregorian toGregorian

Showing Date

There are two functions for showing converted dates. The first is asDateTime and the last one is asTimestamp.

Signature of asDateTime is asDateTime($pattern = 'yyyy/MM/dd, HH:mm:ss'). This function accepts an ICU-acceptable format. You can find more info from this link. Also it's good idea for implementing a function that parse traditional php date-acceptable format (See ToDo section).

asTimestamp function return the unix epoch, positive integer for time after that and negative integer for before that.


There are some examples for using IntlDateTrait. I think they are necessary and sufficent.

// '1396/06/16, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toPersian('en')->asDateTime();
// '1396/06/16, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toPersian()->asDateTime();
// '۱۳۹۶/۰۶/۱۶, ۰۷:۵۳:۴۵'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toJapanese()->asDateTime();
// '0029/09/07, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toIslamic()->asDateTime();
// '١٤٣٨/١٢/١٧, ٠٧:٥٣:٤٥'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toBuddhist()->asDateTime();
// '2560/09/07, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toChinese()->asDateTime();
// '0034/07/17, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toIndian()->asDateTime();
// '1939/06/16, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toHebrew()->asDateTime();
// 'תשע״ז/י״ב/ט״ז, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toCoptic()->asDateTime();
// '1733/13/02, 07:53:45'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->toEthiopic()->asDateTime();
// '2009/13/02, 07:53:45'

$this->fromPersian([1396, 6, 16, 12, 23, 45])->toIslamic()->asDateTime();
// '١٤٣٨/١٢/١٧, ٠٧:٥٣:٤٥'

$this->fromPersian([1396, 6, 16, 12, 23, 45])->toGregorian()->asDateTime();
// '2017/09/07, 07:53:45'

$this->fromPersian([1396, 6, 16, 12, 23, 45])->toGregorian()->setFinalTimeZone('Asia/Tehran')->asDateTime();
// '2017/09/07, 12:23:45'

$this->fromPersian([1396, 6, 16, 12, 23, 45])->toGregorian()->setFinalTimeZone('Asia/Tehran')->asDateTime('yyyy');
// '2017'

$this->fromGregorian([2017, 9, 7, 12, 23, 45])->asTimestamp();
// '1504770825'

$this->fromPersian([1396, 6, 16, 12, 23, 45])->asTimestamp();
// '1504770825'

IntlDateTrait API

There are some methods that help to control more on converting process. I just list them in this section. I think thier name complain their usages, If it's not, please write document for them :D.

Setters Gettes
setOriginDate($datetimeArray) getFinalDate()
setFromLocale($locale) getFromLocale()
setFromCalendar($calendar) getFromCalendar()
setToLocale($locale) getToLocale()
setToCalendar($calendar) getToCalendar()
getFromLocaleAndCalendar() getToLocaleAndCalendar()
setOriginTimeZone($timezone) getOriginTimeZone()
setFinalTimeZone($timezone) getFinalTimeZone()
setOriginCalendar($locale) getOriginCalendar()
setFinalCalendar($locale) getFinalCalendar()
setFinalDateType($datetype) getFinalDateType()
setFinalTimeType($timetype) getFinalTimeType()
setFinalCalendarType($calendarType) getFinalCalendarType()
setFinalPattern($pattern) getFinalPattern()
setIntlDateFormatter($locale = "en_US", $datetype = IntlDateFormatter::FULL, $timetype = IntlDateFormatter::FULL, $timezone = 'UTC', $calendar = IntlDateFormatter::GREGORIAN, $pattern = 'yyyy/MM/dd HH:mm:ss') getIntlDateFormatter()
setIntlCalendar($timezone = 'Asia/Tehran', $locale = 'fa_IR@calendar=persian') getIntlCalendar()


  • Implement parsePattern($pattern) method.
* Implement a function to parse both ICU patterns and php date
* function patterns and return a pattern that is compatible on
* ICU format. The php pattern must start with php keyword, for
* example `php:Y-F-d, H:i:s` is a php pattern.
  • Implement guessDateTime($timestring) method.

  • Write tests!


Just fork this repository, do your modification or addition and send a pull request!


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