PHP gets the start timestamp and end timestamp for today, yesterday, last week, this month

PHP gets the start timestamp and end timestamp of today, yesterday, last week, this month, mainly using PHP's time function mktime. Let's start with a straight-through example to illustrate how to use Mktime to get the start timestamp and end timestamp for today, yesterday, last week, this month, and then introduce the Mktime function and usage.

1 //PHP gets today's start timestamp and end timestamp2 $beginToday=Mktime(0,0,0,Date(' m '),Date(' d '),Date(' Y '));3 $endToday=Mktime(0,0,0,Date(' m '),Date(' d ') +1,Date(' Y ')) -1;4 //PHP gets yesterday start timestamp and end timestamp5 $beginYesterday=Mktime(0,0,0,Date(' m '),Date(' d ')-1,Date(' Y '));6 $endYesterday=Mktime(0,0,0,Date(' m '),Date(' d '),Date(' Y ')) -1;7 //PHP gets last week start timestamp and end timestamp8 $beginLastweek=Mktime(0,0,0,Date(' m '),Date(' d ')-Date(' W ') +1-7,Date(' Y '));9 $endLastweek=Mktime(23,59,59,Date(' m '),Date(' d ')-Date(' W ') +7-7,Date(' Y '));Ten //PHP gets this month start timestamp and end timestamp One $beginThismonth=Mktime(0,0,0,Date(' m '), 1,Date(' Y ')); A $endThismonth=Mktime(23,59,59,Date(' m '),Date(' t '),Date(' Y '));

The PHP mktime () function is used to return a Unix timestamp for a date.

Grammar

Mktime (HOUR,MINUTE,SECOND,MONTH,DAY,YEAR,IS_DST)

Parameters	Description
Hour	Optional. Specified hours.
Minute	Optional. Specify minutes.
Second	Optional. Specify seconds.
Month	Optional. Specifies the number of months to be represented.
Day	Optional. Prescribed days.
Year	Optional. Prescribed year. On some systems, the legal value is between 1901-2038. However, there is no such limit in PHP 5.
Is_dst	Optional. If the time is in daylight saving time (DST), set to 1, otherwise set to 0 and if unknown, set to-1. Since 5.1.0, the IS_DST parameter has been discarded. Therefore, you should use the new Time zone processing feature.

Usage

The parameter always represents the GMT date, so IS_DST has no effect on the result.

Parameters can be left-to-right and empty, and empty parameters will be set to the corresponding current GMT value.

Note that before PHP 5.1, if the argument for the function is illegal, it will return false.

It is also important to note that this function is useful for date arithmetic and validation. It can automatically correct out-of-bounds input, such as:

Echo (Date ("M-d-y", Mktime (0,0,0,12,36,2001)));

Output results such as:

jan-05-2002

PHP gets the start timestamp and end timestamp for today, yesterday, last week, this month