# Carbon
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[](https://travis-ci.org/briannesbitt/Carbon)
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An international PHP extension for DateTime. [http://carbon.nesbot.com](http://carbon.nesbot.com)
```php
use Carbon\Carbon;
printf("Right now is %s", Carbon::now()->toDateTimeString());
printf("Right now in Vancouver is %s", Carbon::now('America/Vancouver')); //implicit __toString()
$tomorrow = Carbon::now()->addDay();
$lastWeek = Carbon::now()->subWeek();
$nextSummerOlympics = Carbon::createFromDate(2016)->addYears(4);
$officialDate = Carbon::now()->toRfc2822String();
$howOldAmI = Carbon::createFromDate(1975, 5, 21)->age;
$noonTodayLondonTime = Carbon::createFromTime(12, 0, 0, 'Europe/London');
$internetWillBlowUpOn = Carbon::create(2038, 01, 19, 3, 14, 7, 'GMT');
// Don't really want this to happen so mock now
Carbon::setTestNow(Carbon::createFromDate(2000, 1, 1));
// comparisons are always done in UTC
if (Carbon::now()->gte($internetWillBlowUpOn)) {
die();
}
// Phew! Return to normal behaviour
Carbon::setTestNow();
if (Carbon::now()->isWeekend()) {
echo 'Party!';
}
// Over 200 languages (and over 500 regional variants) supported:
echo Carbon::now()->subMinutes(2)->diffForHumans(); // '2 minutes ago'
echo Carbon::now()->subMinutes(2)->locale('zh_CN')->diffForHumans(); // '2分钟前'
echo Carbon::parse('2019-07-23 14:51')->isoFormat('LLLL'); // 'Tuesday, July 23, 2019 2:51 PM'
echo Carbon::parse('2019-07-23 14:51')->locale('fr_FR')->isoFormat('LLLL'); // 'mardi 23 juillet 2019 14:51'
// ... but also does 'from now', 'after' and 'before'
// rolling up to seconds, minutes, hours, days, months, years
$daysSinceEpoch = Carbon::createFromTimestamp(0)->diffInDays();
```
[Get supported nesbot/carbon with the Tidelift Subscription](https://tidelift.com/subscription/pkg/packagist-nesbot-carbon?utm_source=packagist-nesbot-carbon&utm_medium=referral&utm_campaign=readme)
## Installation
### With Composer
```
$ composer require nesbot/carbon
```
```json
{
"require": {
"nesbot/carbon": "^2.16"
}
}
```
```php
### Without Composer
Why are you not using [composer](http://getcomposer.org/)? Download the Carbon [latest release](https://github.com/briannesbitt/Carbon/releases) and put the contents of the ZIP archive into a directory in your project. Then require the file `autoload.php` to get all classes and dependencies loaded on need.
```php
### Translators
[Thanks to people helping us to translate Carbon in so many languages](https://carbon.nesbot.com/contribute/translators/)
### Backers
Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/Carbon#backer)]
### Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/Carbon#sponsor)]