Difference Between Dates

[Electroman]

Does anyone know if there is a function that will tell me the amount of days between to dates?

[NoteMe]

Found this on PHP.net...

T.E.
07-Jan-2004 05:15
Most functions calculating the difference in days between two days take some assumptions. They often ignore leap-years or decide to set a month to 30 days. This one here should work better and more precise.
I left one thing to fix: I supposed a leap in every four years. This assumption is wrong when passing a xx00-border, if xx00 mod 400 != 0. However, PHPs date-function won't work with 1900 or less and 2100 or more. So for the next few years within the given boarders of PHP, this one should work.

function date_diff($dat1,$dat2)
/* Dat1 and Dat2 passed as "YYYY-MM-DD" */
{
  $tmp_dat1 = mktime(0,0,0,
     substr($dat1,5,2),substr($dat1,8,2),substr($dat1,0,4));
  $tmp_dat2 = mktime(0,0,0,
     substr($dat2,5,2),substr($dat2,8,2),substr($dat2,0,4));

  $yeardiff = date('Y',$tmp_dat1)-date('Y',$tmp_dat2);
  /* a leap year in every 4 years and the days-difference */
  $diff = date('z',$tmp_dat1)-date('z',$tmp_dat2) +
           floor($yeardiff /4)*1461;

  /* remainder */
  for ($yeardiff = $yeardiff % 4; $yeardiff>0; $yeardiff--)
   {
     $diff += 365 + date('L',
         mktime(0,0,0,1,1,
           intval(
             substr(
               (($tmp_dat1>$tmp_dat2) ? $dat1 : $dat2),0,4))
           -$yeardiff+1));
   }

  return $diff;
}

[Electroman]

Thank You, Guess where this is going .

[NoteMe]

Originally posted by Electroman
Thank You, Guess where this is going .

Then I guess all downhill from now...

[Electroman]

Posted by NoteMe
Then I guess all downhill from now...

(I got lost and forgot to reply to this )