1.checkdate - 驗(yàn)證一個(gè)日期的合法性
checkdate (int $month , int $day , int $year )
var_dump(checkdate(8, 31, 2019)); ===>bool(true)
var_dump(checkdate(2, 29, 2019)); ===>bool(false)
2.date_add - 給一個(gè) DateTime 對象增加一定量的天，月巧还，年泽篮，小時(shí)，分鐘 以及秒谜疤。
date_sub - 對一個(gè) DateTime 對象減去一定量的 日佃延、月、年茎截、小時(shí)苇侵、分鐘和秒。
date_add (DateTime $object , DateInterval $interval)
參數(shù) 必需的 描述
object 是 由 date_create() 返回的 DateTime 類型的對象企锌。此函數(shù)會修改這個(gè)對象榆浓。
interval 是 DateInterval 對象。
$date = date_create('2019-02-05');
date_add($date, date_interval_create_from_date_string('10 days'));
echo date_format($date, 'Y-m-d'); ===> 2019-02-15
3.date_create - 返回一個(gè)新的 DateTime 對象
date_create ([ string $time = "now" [, DateTimeZone $timezone = NULL ]] )
$date = date_create('2019-01-01');
echo date_format($date, 'Y-m-d'); ===>2019-01-01
4.date_date_set - 設(shè)置 DateTime 對象的日期
date_date_set (DateTime $object , int $year , int $month , int $day )
$date = date_create();
date_date_set($date, 2019, 2, 3);
echo date_format($date, 'Y-m-d'); ===> 2019-02-03
5.date_diff - 返回兩個(gè)DateTimeInterface對象之間的差異撕攒。
date_diff ( DateTimeInterface $datetime1 , DateTimeInterface $datetime2 [, bool $absolute = FALSE ] )
參數(shù)： 必需
$absolute 否 差異返回是否強(qiáng)制為正
$datetime1 = date_create('2019-10-11');
$datetime2 = date_create('2019-10-13');
//$interval = $datetime1->diff($datetime2);
$interval =date_diff($datetime1,$datetime2);
print_r($interval);
DateInterval Object
(
[y] => 0
[m] => 0
[d] => 2
[h] => 0
[i] => 0
[s] => 0
[f] => 0
[weekday] => 0
[weekday_behavior] => 0
[first_last_day_of] => 0
[invert] => 0 //0 正 1 負(fù)
[days] => 2
[special_type] => 0
[special_amount] => 0
[have_weekday_relative] => 0
[have_special_relative] => 0
)
6.date_format - 返回根據(jù)給定格式格式化的日期
date_format ( DateTimeInterface $object , string $format )
$date = date_create();
echo date_format($date, 'Y-m-d H:i:s');
7.date_modify - 修改日期時(shí)間對象的值
date_modify ( DateTime $object , string $modify )
$date = date_create('2019-12-12');
date_modify($date, '+1 day');
echo date_format($date, 'Y-m-d'); ===> 2019-12-13
8.date_parse - 返回關(guān)聯(lián)數(shù)組陡鹃，其中包含有關(guān)給定日期的詳細(xì)信息
print_r(date_parse("2019-12-12 10:02:00"));
Array
(
[year] => 2019
[month] => 12
[day] => 12
[hour] => 10
[minute] => 2
[second] => 0
[fraction] => 0
[warning_count] => 0
[warnings] => Array
(
)
[error_count] => 0
[errors] => Array
(
)
[is_localtime] =>
)
9.date_time_set - 設(shè)置 DateTime 對象的時(shí)間
date_time_set ( DateTime $object , int $hour , int $minute [, int $second = 0 [, int $microseconds = 0 ]] )
$date = date_create('2019-01-01');
date_time_set($date, 14, 55);
echo date_format($date, 'Y-m-d H:i:s') ===>2019-01-01 14:55:00
date_time_set($date, 14, 55, 24);
echo date_format($date, 'Y-m-d H:i:s') ===>2019-01-01 14:55:24
10.date_timestamp_get - 獲取Unix時(shí)間戳
date_timestamp_get ( DateTimeInterface $object )
$date = date_create('2021-01-01 12:22:33');
echo date_timestamp_get($date);===> 1609474953
11.getdate - 返回一個(gè)根據(jù) timestamp 得出的包含有日期信息的關(guān)聯(lián)數(shù)組。如果沒有給出時(shí)間戳則認(rèn)為是當(dāng)前本地時(shí)間抖坪。
$today = getdate();
print_r($today);
Array
(
[seconds] => 35
[minutes] => 4
[hours] => 15
[mday] => 18
[wday] => 4
[mon] => 3
[year] => 2021
[yday] => 76
[weekday] => Thursday
[month] => March
[0] => 1616051075
)
12.strtotime - 將任何字符串的日期時(shí)間描述解析為 Unix 時(shí)間戳
strtotime ( string $time [, int $now = time() ] )
echo strtotime("now"), "<br/>";
echo strtotime("10 September 2000"), "<br/>";
echo strtotime("+1 day"), "<br/>";
echo strtotime("+1 week"), "<br/>";
echo strtotime("+1 week 2 days 4 hours 2 seconds"), "<br/>";
echo strtotime("next Thursday"), "<br/>";
echo strtotime("last Monday"), "<br/>";
