Convert a date format in PHP

Question

I am trying to convert a date from yyyy-mm-dd to dd-mm-yyyy  but not in SQL   however I don t know how the date function requires a timestamp  and I can t get a timestamp from this string   How is this possible

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Use date create and date format  Try this   function formatDate  input   output      inputdate   date create  input      output   date format  inputdate   output     return  output

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Use this function to convert from any format to any format  function reformatDate  date   from format    d m Y    to format    Y-m-d          date aux   date create from format  from format   date       return date format  date aux  to format

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function dateFormat  date         m   preg replace     0-9          date       if  preg match all    d 2       m   r              r   reset  r           if  count  r     4                if   r 2   lt   12  amp  amp   r 3   lt   31  return   r 0  r 1 - r 2 - r 3       Y-m-d             if   r 0   lt   31  amp  amp   r 1     0  amp  amp   r 1   lt   12  return   r 2  r 3 - r 1 - r 0       d-m-Y             if   r 0   lt   12  amp  amp   r 1   lt   31  return   r 2  r 3 - r 0 - r 1       m-d-Y             if   r 2   lt   31  amp  amp   r 3   lt   12  return   r 0  r 1 - r 3 - r 2      Y-m-d                     y    r 2   gt   0  amp  amp   r 2   lt   date  y     date  y      r 2     date  y   - 1     r 2           if   r 0   lt   31  amp  amp   r 1     0  amp  amp   r 1   lt   12  return   y- r 1 - r 0       d-m-y          var dump dateFormat  31 01 00        return 2000-01-31 var dump dateFormat  31 01 2000        return 2000-01-31 var dump dateFormat  01-31-2000        return 2000-01-31 var dump dateFormat  2000-31-01        return 2000-01-31 var dump dateFormat  20003101        return 2000-01-31

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Use   implode  -   array reverse explode  -    date       Without the date conversion overhead  I am not sure it ll matter much

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You can try the strftime   function  Simple example  strftime  time    d  m  Y

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date  m d Y h i s a  strtotime  val  EventDateTime

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You can change the format using the date   and the strtotime      date    9 18 2019    echo date  d-m-y  strtotime  date      Result   18-09-19  We can change the format by changing the   d-m-y

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There are two ways to implement this   1        date   strtotime date        new date   date  d-m-Y    date     2        cls date   new DateTime  date       echo  cls date- gt format  d-m-Y

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Note  Because this post s answer sometimes gets upvoted  I came back   here to kindly ask people not to upvote it anymore  My answer is   ancient  not technically correct  and there are several better   approaches right here  I m only keeping it here for historical   purposes       Although the documentation poorly describes the strtotime function     rjmunro correctly addressed the issue in his comment  it s in ISO   format date  YYYY-MM-DD        Also  even though my Date Converter function might still work  I d   like to warn that there may be imprecise statements below  so please   do disregard them    The most voted answer is actually incorrect   The PHP strtotime manual here states that  The function expects to be given a string containing an English date format   What it actually means is that it expects an American US date format  such as  m-d-Y  or  m d Y    That means that a date provided as  Y-m-d  may get misinterpreted by strtotime  You should provide the date in the expected format   I wrote a little function to return dates in several formats  Use and modify at will  If anyone does turn that into a class  I d be glad if that would be shared   function Date Converter  date   locale    br            Exception     if  is null  date            date   date  m d Y H i s           Let s go ahead and get a string date in case we ve       been given a Unix Time Stamp     if   locale     unix            date   date  m d Y H i s    date          Separate Date from Time      date   explode       date        if   locale     br               Separate d m Y from Date          date 0    explode       date 0              Rearrange Date into m d Y          date 0     date 0  1           date 0  0           date 0  2                Return date in all formats           US          Return  datetime    us     implode       date            Return  date    us          date 0              Universal          Return  time                date 1            Return  unix datetime      strtotime  Return  datetime    us              Return  unix date          strtotime  Return  date    us              Return  getdate            getdate  Return  unix datetime                BR          Return  datetime    br     date  d m Y H i s    Return  unix datetime              Return  date    br         date  d m Y    Return  unix date            Return     return  Return       End Function

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newDate   preg replace     d   D   d   D   d       3- 2- 1   originalDate     This code works for every date format    You can change the order of replacement variables such  3- 1- 2 due to your old date format

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timestamp   strtotime your date variable     new date   date  d-m-Y    timestamp     For more  see the documentation for strtotime   Or even shorter    new date   date  d-m-Y   strtotime your date variable

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In PHP any date can be converted into the required date format using different scenarios for example to change any date format into Day  Date Month Year  newdate   date  quot D  d M Y quot   strtotime  date     It will show date in the following very well format Mon  16 Nov 2020

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Use strtotime   and date      originalDate    2010-03-21    newDate   date  d-m-Y   strtotime  originalDate       See the strtotime and date documentation on the PHP site    Note that this was a quick solution to the original question  For more extensive conversions  you should really be using the DateTime class to parse and format  -

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Simple way Use strtotime   and date      original dateTime    2019-05-11 17 02 07    This may be database datetime  newDate   date  d-m-Y   strtotime  original dateTime      With time   newDate   date  d-m-Y h i s a   strtotime  original dateTime

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Given below is PHP code to generate tomorrow s date using mktime   and change its format to dd mm yyyy format and then print it using echo    tomorrow   mktime 0  0  0  date  m    date  d     1  date  Y     echo date  d    tomorrow          date  m    tomorrow         date  Y    tomorrow

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If you d like to avoid the strtotime conversion  for example  strtotime is not being able to parse your input  you can use    myDateTime   DateTime  createFromFormat  Y-m-d    dateString    newDateString    myDateTime- gt format  d-m-Y      Or  equivalently    newDateString   date format date create from format  Y-m-d    dateString    d-m-Y      You are first giving it the format  dateString is in  Then you are telling it the format you want  newDateString to be in   Or if the source-format always is  Y-m-d   yyyy-mm-dd   then just use DateTime    lt  php      source    2012-07-31        date   new DateTime  source       echo  date- gt format  d m Y       31 07 2012     echo  date- gt format  d-m-Y       31-07-2012   gt

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For this specific conversion we can also use a format string    new   vsprintf   3 s- 2 s- 1 s   explode  -    old      Obviously this won t work for many other date format conversions  but since we re just rearranging substrings in this case  this is another possible way to do it

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Also another obscure possibility    oldDate    2010-03-20   arr   explode  -    oldDate    newDate    arr 2   -   arr 1   -   arr 0     I don t know if I would use it but still

[php] Convert a date format in PHP

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