How do I compare two DateTime objects in PHP 5 2 8

Question

Having a look on the PHP documentation  the following two methods of the DateTime object would both seem to solve my problem    DateTime  diff   Get the difference and use that to determine which is more ancient  DateTime  getTimestamp   Get the UNIX timestampt and compare those    Both these methods are marked in the doco as being available in version    5 3  and  not surprisingly  if I try to call them I find they don t exist   I can t find any specific documentation for 5 2 8 so I am not sure if there are equivalent methods in my version   I have Googled the problem and found an eclectic range of solutions  none of which answer my very simple requirements    How do I compare two DateTime objects  Where can I find the doco for previous PHP versions  Specifically version 5 2 8    For some context  I have the following code    st dt   new DateTime verifyParam   start date      end dt   new DateTime verifyParam   end date         is the end date more ancient than the start date  if   end dt  lt   start dt     Apparently there is no comparison operator on this guy     Edit  Apparently my assumptions were completely false  thanks Milen for illustrating this so effectively    There is a comparison operator and it works just fine thanks   Sometimes I really miss a compiler   The bug is in the code above  I am sure you will find it much faster than I did

User · Answer

elapsed    2592000      Time in the past  time past    2014-07-16 11 35 33    time past   strtotime  time past       Add a month to that time  time past    time past    elapsed      Time NOW  time now   time        Check if its been a month since time past if  time past  gt   time now       echo  Hasnt been a month        else      echo  Been longer than a month

User · Answer

If you want to compare dates and not time  you could use this    d1- gt format  Y-m-d       d2- gt format  Y-m-d

User · Answer

The following seems to confirm that there are comparison operators for the DateTime class   dev    php  lt  php date default timezone set  Europe London      d1   new DateTime  2008-08-03 14 52 10     d2   new DateTime  2008-01-03 11 11 10    var dump  d1     d2   var dump  d1  gt   d2   var dump  d1  lt   d2     gt  bool false  bool true  bool false  dev    php -v PHP 5 2 6-1 lenny3 with Suhosin-Patch 0 9 6 2  cli   built  Apr 26 2009 20 09 03  Copyright  c  1997-2008 The PHP Group Zend Engine v2 2 0  Copyright  c  1998-2008 Zend Technologies dev

User · Answer

From the official documentation      As of PHP 5 2 2  DateTime objects can be compared using comparison operators     date1   new DateTime  now     date2   new DateTime  tomorrow     var dump  date1     date2      false var dump  date1  lt   date2      true var dump  date1  gt   date2      false   For PHP versions before 5 2 2  actually for any version   you can use diff    datetime1   new DateTime  2009-10-11       11 October 2013  datetime2   new DateTime  2009-10-13       13 October 2013   interval    datetime1- gt diff  datetime2   echo  interval- gt format   R a days        2 days

User · Answer

As of PHP 7 x  you can use the following    aDate   new  DateTime      time       bDate   new  DateTime      time   - 3600      aDate  lt   gt   bDate       gt  1    aDate  is newer than   bDate

User · Answer

You can also compare epoch seconds      d1- gt format  U    lt   d2- gt format  U     Source   http   laughingmeme org 2007 02 27 looking-at-php5s-datetime-and-datetimezone   quite interesting article about DateTime

User · Answer

This may help you     today   date  m-d-Y H i s     thisMonth  date  m     thisYear   date  y     expectedDate     thisMonth 1   -08- thisYear 23 58 00     if  strtotime  expectedDate   gt  strtotime  today         echo  Expected date is greater then current date       return     else    echo  Expected date is lesser then current date

[php] How do I compare two DateTime objects in PHP 5.2.8?

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