Get first day of week in PHP

Question

Given a date MM-dd-yyyy format  can someone help me get the first day of the week

User · Answer

givenday   date  w   mktime 0  0  0  MM  dd  yyyy      This gives you the day of the week of the given date itself where 0   Sunday and 6   Saturday  From there you can simply calculate backwards to the day you want

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Here I am considering Sunday as first  amp  Saturday as last day of the week      m   strtotime  06-08-2012       today     date  l    m      custom date   strtotime  date  d-m-Y    m        if   today     Sunday           week start   date  d-m-Y    m       else        week start   date  d-m-Y   strtotime  this week last sunday    custom date           if   today     Saturday          week end   date  d-m-Y    m     else        week end   date  d-m-Y   strtotime  this week next saturday    custom date        echo   lt br gt Start      week start    echo   lt br gt End      week end      Output    Start  05-08-2012    End  11-08-2012

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In order to have the simplest code and have weeks starting on monday  I used this method    day    date  w   6  7    transform week start from sunday to monday  time   strtotime  -   day   days

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How about this    day of week   date  N   strtotime  string date     week first day   date  Y-m-d   strtotime  string date     -       day of week - 1      days      week last day   date  Y-m-d   strtotime  string date            7 -  day of week      days

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Keep it simple     lt  php      dateTime   new  DateTime  2020-04-01     monday   clone  dateTime- gt modify   Sunday      dateTime- gt format  l       Monday last week     Monday this week     sunday   clone  dateTime- gt modify  Sunday this week          gt    Source   PHP manual  NB  as some user commented the  dateTime value will be modified

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strtotime  this week   time       Replace time    Next sunday last monday methods won t work when the current day is sunday monday

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I was searching for a solution similar to this and I finally came up with something that will return each day of the current week     set current timestamp  today   time      calculate the number of days since Monday  dow   date  w    today      offset    dow - 1  if   offset  lt  0       offset   6        calculate timestamp for Monday and Sunday  monday    today -   offset   86400    tuesday    monday    1   86400    wednesday    monday    2   86400    thursday    monday    3   86400    friday    monday    4   86400    saturday    monday    5   86400    sunday    monday    6   86400     print dates for Monday and Sunday in the current week print date  Y-m-d    monday      n   print date  Y-m-d    tuesday      n   print date  Y-m-d    wednesday      n   print date  Y-m-d    thursday      n   print date  Y-m-d    friday      n   print date  Y-m-d    saturday      n   print date  Y-m-d    sunday      n     Thank you to dbunic who posted this here  http   www redips net php week-list-current-date  comments

User · Answer

monday   date  d-m-Y  strtotime  last monday  strtotime  next monday  strtotime  date        You have to get next monday first then get the  last monday  of next monday  So if the given date is monday it will return the same date not last week monday

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I ve come against this question a few times and always surprised the date functions don t make this easier or clearer  Here s my solution for PHP5 that uses the DateTime class           param DateTime  date A given date     param int  firstDay 0-6  Sun-Sat respectively     return DateTime     function getFirstDayOfWeek DateTime  date   firstDay   0         offset   7 -  firstDay       ret   clone  date       ret- gt modify -   date- gt format  w      offset    7     days        return  ret      Necessary to clone to avoid altering the original date

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Very simple to use strtotime function   echo date  Y-m-d   strtotime  monday this week       n       echo date  Y-m-d   strtotime  sunday this week       n     It differs a bit across PHP versions   Output for 5 3 0 - 5 6 6  php7 20140507 - 20150301  hhvm-3 3 1 - 3 5 1  2015-03-16 2015-03-22   Output for 4 3 5 - 5 2 17  2015-03-23 2015-03-22   Output for 4 3 0 - 4 3 4  2015-03-30 2015-03-29   Comparing at Edge-Cases  Relative descriptions like this week have their own context  The following shows the output for this week monday and sunday when it s a monday or a sunday    date    2015-03-16      monday echo date  Y-m-d   strtotime  monday this week   strtotime  date       n      echo date  Y-m-d   strtotime  sunday this week   strtotime  date       n     date    2015-03-22      sunday echo date  Y-m-d   strtotime  monday this week   strtotime  date       n      echo date  Y-m-d   strtotime  sunday this week   strtotime  date       n     Againt it differs a bit across PHP versions   Output for 5 3 0 - 5 6 6  php7 20140507 - 20150301  hhvm-3 3 1 - 3 5 1  2015-03-16 2015-03-22 2015-03-23 2015-03-29   Output for 4 3 5 - 5 0 5  5 2 0 - 5 2 17  2015-03-16 2015-03-22 2015-03-23 2015-03-22   Output for 5 1 0 - 5 1 6  2015-03-23 2015-03-22 2015-03-23 2015-03-29   Output for 4 3 0 - 4 3 4  2015-03-23 2015-03-29 2015-03-30 2015-03-29

User · Answer

lt  php    PHP 5 3 0     date default timezone set  America Denver      Set apprpriate timezone  start date   strtotime  2009-12-15      Set start date    Today s date if  start date is a Sunday  otherwise date of previous Sunday  today or previous sunday   mktime 0  0  0  date  m    start date   date  d    start date   date  Y    start date   -   date  w    start date    0    0    86400   date  w    start date        prints 12-13-2009  month-day-year  echo date  m-d-Y    today or previous sunday      gt     Note  MM  dd and yyyy in the Question are not standard php date format syntax - I can t be sure what is meant  so I set the  start date with ISO year-month-day

User · Answer

What about    date    2013-03-18     searchRow   date  d m Y   strtotime  last monday  strtotime  date     1 day      echo  for date     date    we get this monday     echo  searchRow  echo   lt br gt      Its not the best way but i tested and if i am in this week i get the correct monday  and if i am on a monday i will get that monday

User · Answer

Try this   function week start date  wk num   yr   first   1   format    F d  Y          wk ts    strtotime        wk num     weeks   strtotime  yr    0101          mon ts   strtotime  -    date  w    wk ts     first     days    wk ts       return date  format   mon ts       sStartDate   week start date  week number   year    sEndDate     date  F d  Y   strtotime   6 days   strtotime  sStartDate        from this forum thread

User · Answer

just simply oneline answer      mondayThisWeek   new Date  date    this week monday

User · Answer

Just use date  format  strtotime  date   LAST SUNDAY   1 DAY

User · Answer

This is the shortest and most readable solution I found        lt  php      weekstart   strtotime  monday this week         weekstop   strtotime  sunday this week 23 59 59          echo date  d m Y H i s    weekstart     -    date  d m Y H i s    weekstop         gt    strtotime is faster than new DateTime  - gt getTimestamp

User · Answer

A smart way of doing this is to let PHP handle timezone differences and Daylight Savings Time  DST   Let me show you how to do this   This function will generate all days from Monday until Friday  inclusive  handy for generating work week days    class DateTimeUtilities       public static function getPeriodFromMondayUntilFriday  offset    now              now   new  DateTimeImmutable  offset  new  DateTimeZone  UTC              today    now- gt setTime 0  0  1             daysFromMonday    today- gt format  N   - 1            monday    today- gt sub new  DateInterval sprintf  P dD    daysFromMonday              saturday    monday- gt add new  DateInterval  P5D              return new  DatePeriod  monday  new  DateInterval  P1D     saturday            foreach  DateTimeUtilities  getPeriodFromMondayUntilFriday   as  day        print  day- gt format  c        print PHP EOL      This will return datetimes Monday-Friday for current week  To do the same for an arbitrary date  pass a date as a parameter to DateTimeUtilities   getPeriodFromMondayUntilFriday  thus   foreach  DateTimeUtilities  getPeriodFromMondayUntilFriday  2017-01-02T15 05 21 00 00   as  day        print  day- gt format  c        print PHP EOL       prints    2017-01-02T00 00 01 00 00   2017-01-03T00 00 01 00 00   2017-01-04T00 00 01 00 00   2017-01-05T00 00 01 00 00   2017-01-06T00 00 01 00 00   Only interested in Monday  as the OP asked    monday   DateTimeUtilities  getPeriodFromMondayUntilFriday  2017-01-02T15 05 21 00 00  - gt getStartDate  - gt format  c    print  monday     prints   2017-01-02T00 00 01 00 00

User · Answer

EDIT  the below link is no longer running on the version of PHP stated  It is running on PHP 5 6 which improves the reliability of strtotime  but isn t perfect  The results in the table are live results from PHP 5 6   For what it s worth  here is a breakdown of the wonky behavior of strtotime when determining a consistent frame of reference   http   gamereplays org reference strtotime php  Basically only these strings will reliably give you the same date  no matter what day of the week you re currently on when you call them   strtotime  next monday    strtotime  this sunday    strtotime  last sunday

User · Answer

Here is what I am using      day   date  w     week start   date  m-d-Y   strtotime  -   day   days      week end   date  m-d-Y   strtotime      6- day    days        day contains a number from 0 to 6 representing the day of the week  Sunday   0  Monday   1  etc     week start contains the date for Sunday of the current week as mm-dd-yyyy   week end contains the date for the Saturday of the current week as mm-dd-yyyy

User · Answer

How about this     first day of week   date  m-d-Y   strtotime  Last Monday   time       last day of week   date  m-d-Y   strtotime  Next Sunday   time

User · Answer

The following code should work with any custom date  just uses the desired date format     custom date   strtotime  date  d-m-Y   strtotime  31-07-2012         week start   date  d-m-Y   strtotime  this week last monday    custom date     week end   date  d-m-Y   strtotime  this week next sunday    custom date    echo   lt br gt Start      week start  echo   lt br gt End      week end    I tested the code with PHP 5 2 17 Results   Start  30-07-2012 End  05-08-2012

User · Answer

This question needs a good DateTime answer -  function firstDayOfWeek  date         day   DateTime  createFromFormat  m-d-Y    date        day- gt setISODate  int  day- gt format  o     int  day- gt format  W    1       return  day- gt format  m-d-Y       var dump firstDayOfWeek  06-13-2013       Output -  string  06-10-2013   length 10    This will deal with year boundaries and leap years

User · Answer

The easiest way to get first day Monday  of current week is    strtotime  next Monday   - 604800    where 604800 - is count of seconds in 1 week 60 60 24 7    This code get next Monday and decrease it for 1 week  This code will work well in any day of week  Even if today is Monday

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I found this quite frustrating given that my timezone is Australian and that strtotime   hates UK dates   If the current day is a Sunday  then strtotime  monday this week   will return the day after   To overcome this      Caution  This is only valid for Australian UK dates    startOfWeek    date  l       Monday     date  d m Y 00 00     date  d m Y   strtotime  last monday 00 00      endOfWeek    date  l       Sunday     date  d m Y 23 59 59     date  d m Y   strtotime  sunday 23 59 59

User · Answer

I use it    firstDate   date   Y-m-d   strtotime   Last Monday   strtotime  -1 week        lastDate   date   Y-m-d   strtotime   First Sunday   strtotime  -1 week         Hope this help you

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You can use Carbon library as well   dateString    02-21-2015      example in format MM-dd-yyyy  date   Carbon  createFromFormat  m-d-Y    dateString    date- gt hour 0 - gt minute 0 - gt second 0 - gt startOfWeek     dateString    date- gt Format  m-d-Y       and you have got a string value  02-16-2015

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This is what I am using to get the first and last day of the week from any date  In this case  monday is the first day of the week      date   date  Y-m-d      you can put any date you want  nbDay   date  N   strtotime  date     monday   new DateTime  date    sunday   new DateTime  date    monday- gt modify  -    nbDay-1    days     sunday- gt modify      7- nbDay    days

User · Answer

Another way to do it       year    2014    month    02    day    26     date   DateTime  createFromFormat  Y-m-d H i s    year    -     month    -     day    00 00 00     day   date  w    date- gt getTimestamp         0 Sunday 6 Saturday if  day  0        newdate    date- gt getTimestamp   -  day   86400     86400 seconds in a day        Look for DST change     if  old   date  I    date- gt getTimestamp        new   date  I    newdate           if  old    0               newdate -  3600     3600 seconds in an hour          else               newdate    3600                     date- gt setTimestamp  newdate      echo  date- gt format  D Y-m-d H i s

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string date    2019-07-31   echo  day of week   date  N   strtotime  string date    echo  week first day   date  Y-m-d   strtotime  string date     -       day of week - 1      days     echo  week last day   date  Y-m-d   strtotime  string date            7 -  day of week      days

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Assuming Monday as the first day of the week  this works   echo date  M-d-y   strtotime  last monday   strtotime  next week   time

User · Answer

If you want Monday as the start of your week  do this    date    2015-10-12    day   date  N   strtotime  date     week start   date  Y-m-d   strtotime  -    day-1    days   strtotime  date      week end   date  Y-m-d   strtotime      7- day    days   strtotime  date

User · Answer

Here s a one liner for the first day of last week  and the last day of last week as a DateTime object    firstDay    new  DateTime   - gt modify sprintf  - d day   date  w     7                                - gt setTime 0  0  0    lastDay    new  DateTime   - gt modify sprintf  - d day   date  w     1                               - gt setTime 23  59  59

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I found this solution helpful   Just subtract if it isn t monday to get the previous Monday   I am using  lower date as the date I pulled from a query that I then need to reconcile to the previous Monday     set this up to go backwards until you find monday while date  D  strtotime  lower date     Mon         lower date   date  Y-m-d   strtotime  lower date     - 1 day       increase the upper spec

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this one is prepared for today is monday  function lastMonday  DateTime  date          timestamp    date- gt getTimestamp          monday     1    date   N    timestamp          if   monday            return  timestamp        else           return strtotime   last monday    timestamp              if you want it to get timestamp instead of DateTime change first two lines   get rid of date- getTimestamp   change them to just this  function lastMonday  timestamp      and if you want it to input string change first two lines to this  function lastMonday  dateString          timestamp   strtotime  dateString

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Should work          Returns start of most recent Sunday          param null int  timestamp     return int     public static function StartOfWeek  timestamp   null        if  timestamp     null   timestamp   time         dow   idate  w    timestamp      Sunday   0  Monday   1  etc      return mktime 0  0  0  idate  m    timestamp   idate  d    timestamp  -  dow  idate  Y    timestamp        Input and output are unix timestamps  Use date to format

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Given PHP version pre 5 3 following function gives you a first day of the week of given date  in this case - Sunday  2013-02-03     lt  php   function startOfWeek  aDate        d strtotime  aDate       return strtotime date  Y-m-d   d    -   date  w   d    days           echo date  Y-m-d  startOfWeek  2013-02-07            gt

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You parse the date using strptime   and use date   on the result   date  N   strptime   m- d- g    dateString

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today day   date  D      Or add your own date  start of week   date  Ymd     end of week   date  Ymd     if  today day     Mon        start of week   date  Ymd   strtotime  last monday      if  today day     Sun                        end of week   date  Ymd   strtotime  next sunday

[php] Get first day of week in PHP?

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