PHP--Time function

<title>php– Time function</title> php– time function Table of Contents

• Time
• Time format for date
• Time
• Date
• Mktime
• Strftime
• SetLocale
• Strtotime
• Datetime
• DateInterval

Time

/etc/php.ini

Date.timezone = Asia/shanghai

Date_default_timezone_set (' Asia/shanghai);

SetLocale (Lc_time, "C"); Echo strftime ("%y-%m-%d:%T"), ' <br> ';

Time format for date

Years:

Y:       4 digits y:       2 digits

Month:

F  January to Decemberm  01 to 12n  1 to 12M  Jan to Dec

Day:

D  01 to 31j  1 to 31

Week

D  Mon to Sunj  1 to 31l  Sunday to Saturdayn  1 to 7w  0 (representing Sunday) to 6

Hours:

H  24 h without leading 0 h  has a leading 0 of 24 hours G  without leading 0 12 hours G  has a leading 0 of 12 hours a  am, PmA  am, PM

Minutes:

I  have a leading 0

Seconds:

S  has a leading 0

Milliseconds:

U  MS number

Time

Time is 1970-01-01 from 00:00:00 to now the number of seconds elapsed

Time ()             # Unit is smicrotime ()        # Unit is smicrotime (1)       # Unit is MS

Date

echo Date (' y-m-d h:i:s ');
echo Date (' y-m-d h:i:s ', Time ());
echo Date (' y-m-d h:i:s ', Filectime ($file));

Mktime

Mktime (H, I, S, M, D, Y)
Mktime (14, 23, 23, 07, 08, 1995)
echo Date (' y-m-d h:i:s ', mktime (0, 0, 0, 1, 1, 1970));

Strftime

Years:

%Y  4-bit%Y  2-bit

Month:

%b  shorthand%b  full write%m  00~12

Day:

%d  01到31% e  1 to 31

Week

%a  shorthand%a  Full write%u  1 to 7%w  0 to 6

Hours:

%H ~  23%i  ~ 12%l  1 ~ 12%p  am, pm%p  am, PM

Minutes:

%M  00 ~ 59

Seconds:

%s  00 ~ 59

Shorthand:

%F  2009-04-05%t  23:34:59

strftimeUsually setlocale used together with

SetLocale

Lc_alllc_collatelc_ctypelc_monetary       Monetary: Currency lc_numericlc_time

SetLocale (Lc_all, ' Zh_cn.utf8 '); Echo strftime ('%F%T '); Echo strftime ('%F%T ', Time ());

Strtotime

Strtotime (' 1 days '), Strtotime (' 1 day ');

Strtotime (' +45 days '), Strtotime (' -45 days ');

Strtotime ('-4 weeks '); Strtotime ('-4 week ');

Strtotime (' 4 weeks 2 days '), Strtotime ('-4 weeks-2 days ');

Datetime

$Raw=' 22. 11.1968. 16.52. ";$Start=DateTime:: Createfromformat (' d. M. Y. H. S ',$Raw);Echo ' Start Date: '.$Start-format(' y-m-d h:i:s ') ."<br>";$Start-setDate(2015, 8, 4);$Start-settime(19, 20, 00);Echo ' Current date: '.$Start-format(' y-m-d h:i:s ') ."<br>";$Start-Modify("+1days +24hours");Echo ' Current date: '.$Start-format(' y-m-d h:i:s ') ."<br>";

DateInterval

$time1=DateTime:: Createfromformat (' y-m-d h:i:s ',' 2015-08-10 12:00:20 ');// $time 1 = Datetime::createfromformat (' y-m-d h:i:s ', ' 2015-08-10 12:0:20 ');//ErrorEcho $time1-format(' y-m-d h:i:s '),' <br> ';$time2=DateTime:: Createfromformat (' y-m-d h:i:s ',' 2017-09-10 22:10:30 ');Echo $time2-format(' y-m-d h:i:s '),' <br> ';$span=$time2-diff($time1);// time2-time1Echo $span-format('%R ');Echo $span-format('%y-%m-%d: ');Echo $span-format('%h:%i:%s ');// -02-01-00:10:10:10$span=$time1-diff($time2);// time1-time2Echo $span-format('%R ');Echo $span-format('%y-%m-%d: ');Echo $span-format('%h:%i:%s ');// -02-01-00:10:10:10// Y indicates a leading 0// R "-" when negative, "+" when positive-, +// R "-" when negative, empty when positive-,

PHP--Time function