PHP uses Strtotime to get last month, next month, month's date, Strtotime last month _php tutorial

PHP uses Strtotime to get last month, next month, month's date, Strtotime last month

Write the program today, suddenly found a long time to write a long time to get the number of days of the function, the classic switch version, but to get the number of days last month, I just put the month-1, it was too sleepy, then saw a kind of creepy feeling, would like to deal with again, But I think there is something super convenient way, so found the following version, made a little change.

Get this month's date:

function GetMonth ($date) {   $firstday = date ("y-m-01", Strtotime ($date));   $lastday = Date ("y-m-d", Strtotime ("$firstday +1 month-1 Day");   Return Array ($firstday, $lastday); }

$firstday is the first day of the month, if the year is 2014-2, then the $firstday will be 2014-02-01, then according to the $firstday plus one months is 2014-03-01, another day is 2014-02-28, It's so convenient to use date () and Strtotime ().

Get last month Date:

function Getlastmonthdays ($date) {   $timestamp =strtotime ($date);   $firstday =date (' y-m-01 ', strtotime (date (' Y ', $timestamp). ' -'. (Date (' m ', $timestamp)-1). ' -01 '));   $lastday =date (' y-m-d ', Strtotime ("$firstday +1 month-1 Day");   Return Array ($firstday, $lastday); }

Last month's date needs to get a timestamp, and then in the month-1 OK, super smart Date () will 2014-0-1 this thing converted into 2013-12-01, too cool.

Get next month's date:

function Getnextmonthdays ($date) {   $timestamp =strtotime ($date);   $arr =getdate ($timestamp);   if ($arr [' mon '] = =) {     $year = $arr [' year '] +1;     $month = $arr [' mon '] -11;     $firstday = $year. '-0 '. $month. ' -01 ';     $lastday =date (' y-m-d ', Strtotime ("$firstday +1 month-1 Day");   } else{     $firstday =date (' y-m-01 ', strtotime (date (' Y ', $timestamp). -'. (Date (' m ', $timestamp) +1). ' -01 '));     $lastday =date (' y-m-d ', Strtotime ("$firstday +1 month-1 Day");   }   Return Array ($firstday, $lastday); }

The code for the next month's date looks a bit longer because date () doesn't go like this 2014-13-01, it will go straight back to 1970, so we need to deal with the problem of December, except for December the direct month +1 is OK.

Generally speaking, it is very convenient, the date function is too powerful.

Finally, the usage of Strtotime is briefly introduced.

Gets the UNIX timestamp for the specified date

Strtotime ("2009-1-22") examples are as follows:
Echo strtotime ("2009-1-22")
Results: 1232553600
Description: Return January 22, 2009 0:0 0 seconds timestamp

Get English text date time

Examples are as follows:
Easy to compare, use date to convert time stamp to system time with specified timestamp

(1) Print the timestamp for tomorrow at this time Strtotime ("+1 Day")
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("+1 Day")
Result: 2009-01-23 09:40:25

(2) Print the timestamp at this time yesterday Strtotime ("-1 day")
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("1 day"))
Result: 2009-01-21 09:40:25

(3) Print timestamp strtotime ("+1 Week") at this time next week
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("+1 Week"))
Result: 2009-01-29 09:40:25

(4) Print timestamp strtotime ("1 week") at this time last week
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("1 week"))
Result: 2009-01-15 09:40:25

(5) Print the time stamp specified next week strtotime ("next Thursday")
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("next Thursday"))
Result: 2009-01-29 00:00:00

(6) Print the timestamp strtotime ("last Thursday") specified on the previous day of the week
Current time:
echo Date ("Y-m-d h:i:s", Time ())
Result: 2009-01-22 09:40:25
Specify time:
echo Date ("Y-m-d h:i:s", Strtotime ("last Thursday"))
Result: 2009-01-15 00:00:00

The above example shows that Strtotime can parse the datetime description of any English text into a Unix timestamp, and we get the specified timestamp by combining mktime () or date () format date time to achieve the required date time.

Articles you may be interested in:

• PHP strtotime functions in a detailed
• PHP in-depth understanding of the use of Strtotime functions
• PHP timestamp Strtotime () using methods and tricks
• PHP uses the Strtotime and date functions to determine if a date is a valid code share
• Get the date of last month, next month, month (strtotime,date) under PHP
• PHP uses the date and Strtotime functions to output a specified date method

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