How PHP Gets the start time stamp and end time stamp for today, yesterday, last week, month _php tips

Copy Code code as follows:

PHP gets today start timestamp and end time stamp
$beginToday =mktime (0,0,0,date (' m '), date (' d '), date (' Y '));
$endToday =mktime (0,0,0,date (' m '), date (' d ') +1,date (' Y '))-1;

PHP gets yesterday's start timestamp and end time stamp

$beginYesterday =mktime (0,0,0,date (' m '), date (' d ') -1,date (' Y '));
$endYesterday =mktime (0,0,0,date (' m '), date (' d '), date (' Y '))-1;

PHP gets last week's start time stamp and end timestamp

$beginLastweek =mktime (0,0,0,date (' m '), date (' d ')-date (' W ') +1-7,date (' Y '));
$endLastweek =mktime (23,59,59,date (' m '), date (' d ')-date (' W ') +7-7,date (' Y '));

PHP gets this month's start timestamp and end time stamp

$beginThismonth =mktime (0,0,0,date (' m '), 1,date (' Y '));
$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)

Parameter description
Hour optional. Set hours.
Minute optional. Specify minutes.
Second Optional. Specified seconds.
Month optional. A month that is specified in numbers.
Day is optional. Stipulated day.
Year is optional. Set year. On some systems, the legal value is between 1901-2038. However, there is no such limit in PHP 5.
Is_dst
Optional. If time is in daylight saving time (DST), set to 1, otherwise set to 0, if unknown, set to-1.

Since 5.1.0, IS_DST parameters have been discarded. Therefore, you should use the new time zone processing attributes.

Usage

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

The parameters can be left-to-right, and the empty arguments will be set to the appropriate current GMT value.

Note that before PHP 5.1, if the parameter of the function is illegal, it returns false.

It is also important to note that the function is useful for date operations and validation. It can automatically correct for cross-border input such as:

Copy Code code as follows:

Echo (Date ("M-d-y", Mktime (0,0,0,12,36,2013));

Output results such as: jan-05-2014