1. 常用：
echo Carbon::now(); // 2016-10-14 15:18:34
echo Carbon::today(); // 2016-10-14 00:00:00
echo Carbon::tomorrow('Europe/London'); // 2016-10-14 00:00:00
echo Carbon::yesterday(); // 2016-10-14 00:00:00
$dt = Carbon::create(2012, 1, 31, 12, 0, 0);
echo $dt->startOfDay(); // 2012-01-31 00:00:00
echo $dt->endOfDay(); // 2012-01-31 23:59:59
echo $dt->startOfMonth(); // 2012-01-01 00:00:00
echo $dt->endOfMonth(); // 2012-01-31 23:59:59
echo $dt->startOfYear(); // 2012-01-01 00:00:00
echo $dt->endOfYear(); // 2012-12-31 23:59:59
echo $dt->startOfDecade(); // 2010-01-01 00:00:00
echo $dt->endOfDecade(); // 2019-12-31 23:59:59
echo $dt->startOfCentury(); // 2000-01-01 00:00:00
echo $dt->endOfCentury(); // 2099-12-31 23:59:59
echo $dt->startOfWeek(); // 2012-01-30 00:00:00
echo $dt->endOfWeek(); // 2012-02-05 23:59:59
2. 转为字符串
echo Carbon::now()->toDateString(); //2016-10-14
echo Carbon::now()->toDateTimeString(); //2016-10-14 20:22:50
echo Carbon::now()->format('Y-m-t'); //2016-10-31
3.解析
echo Carbon::parse('2016-10-15')->toDateTimeString(); //2016-10-15 00:00:00
echo Carbon::parse('2016-10-15')->toDateTimeString(); //2016-10-15 00:00:00
echo Carbon::parse('2016-10-15 00:10:25')->toDateTimeString(); //2016-10-15 00:10:25
echo Carbon::parse('today')->toDateTimeString(); //2016-10-15 00:00:00
echo Carbon::parse('yesterday')->toDateTimeString(); //2016-10-14 00:00:00
echo Carbon::parse('tomorrow')->toDateTimeString(); //2016-10-16 00:00:00
echo Carbon::parse('2 days ago')->toDateTimeString(); //2016-10-13 20:49:53
echo Carbon::parse('+3 days')->toDateTimeString(); //2016-10-18 20:49:53
echo Carbon::parse('+2 weeks')->toDateTimeString(); //2016-10-29 20:49:53
echo Carbon::parse('+4 months')->toDateTimeString(); //2017-02-15 20:49:53
echo Carbon::parse('-1 year')->toDateTimeString(); //2015-10-15 20:49:53
echo Carbon::parse('next wednesday')->toDateTimeString(); //2016-10-19 00:00:00
echo Carbon::parse('last friday')->toDateTimeString(); //2016-10-14 00:00:00
4.修改
echo Carbon::now()->addDays(25); //2016-11-09 14:00:01
echo Carbon::now()->addWeeks(3); //2016-11-05 14:00:01
echo Carbon::now()->addHours(25); //2016-10-16 15:00:01
echo Carbon::now()->subHours(2); //2016-10-15 12:00:01
echo Carbon::now()->addHours(2)->addMinutes(12); //2016-10-15 16:12:01
echo Carbon::now()->modify('+15 days'); //2016-10-30 14:00:01
echo Carbon::now()->modify('-2 days'); //2016-10-13 14:00:01
5.比较
min – 返回最小日期。
max – 返回最大日期。
eq – 判断两个日期是否相等。
gt – 判断第一个日期是否比第二个日期大。
lt – 判断第一个日期是否比第二个日期小。
gte – 判断第一个日期是否大于等于第二个日期。
lte – 判断第一个日期是否小于等于第二个日期。
echo Carbon::now()->tzName; // America/Toronto
$first = Carbon::create(2012, 9, 5, 23, 26, 11);
$second = Carbon::create(2012, 9, 5, 20, 26, 11, 'America/Vancouver');
echo $first->toDateTimeString(); // 2012-09-05 23:26:11
echo $first->tzName; // America/Toronto
echo $second->toDateTimeString(); // 2012-09-05 20:26:11
echo $second->tzName; // America/Vancouver
var_dump($first->eq($second)); // bool(true)
var_dump($first->ne($second)); // bool(false)
var_dump($first->gt($second)); // bool(false)
var_dump($first->gte($second)); // bool(true)
var_dump($first->lt($second)); // bool(false)
var_dump($first->lte($second)); // bool(true)
$first->setDateTime(2012, 1, 1, 0, 0, 0);
$second->setDateTime(2012, 1, 1, 0, 0, 0); // Remember tz is 'America/Vancouver'
var_dump($first->eq($second)); // bool(false)
var_dump($first->ne($second)); // bool(true)
var_dump($first->gt($second)); // bool(false)
var_dump($first->gte($second)); // bool(false)
var_dump($first->lt($second)); // bool(true)
var_dump($first->lte($second)); // bool(true)
判断一个日期是否介于两个日期之间，可以使用 between() 方法
$first = Carbon::create(2012, 9, 5, 1);
$second = Carbon::create(2012, 9, 5, 5);
var_dump(Carbon::create(2012, 9, 5, 3)->between($first, $second)); // bool(true)
var_dump(Carbon::create(2012, 9, 5, 5)->between($first, $second)); // bool(true)
var_dump(Carbon::create(2012, 9, 5, 5)->between($first, $second, false));// bool(false)
6.返回两时间之间的天数
echo Carbon::parse('2023-04-05')->diffInDays('2023-09-02');//150
7.返回两时间之间的日期
$period = \Carbon\CarbonPeriod::create('2023-04-05', '2023-09-02');
$data = [];
foreach ($period as $key => $date) {
$data[] = $date->format('Y-m-d');
}
var_dump($data);//[2023-04-05,2023-04-06,2023-04-07,2023-04-08...]
参考：https://www.jianshu.com/p/9d2b576acded