How can we know the number of days between two given dates using PHP?

Sabari · #1 09-11-2007, 07:11 AM

vijayanand · #2 09-21-2007, 02:20 AM

hi sabari,

Using the following function u can get the no of days between two dates.

PHP Code:

  function dateDiff($dformat, $endDate, $beginDate)

{

$date_parts1=explode($dformat, $beginDate);

$date_parts2=explode($dformat, $endDate);

$start_date=gregoriantojd($date_parts1[0], $date_parts1[1], $date_parts1[2]);

$end_date=gregoriantojd($date_parts2[0], $date_parts2[1], $date_parts2[2]);

return $end_date - $start_date;

}

Explanation:
Now let us see how we use this function:

$date1="07/11/2003";
$date2="09/04/2004";

print "If we minus " . $date1 . " from " . $date2 . " we get " . dateDiff("/", $date2, $date1) . ".";

which generates If we minus 07/11/2003 from 09/04/2004 we get 421.

Sabari · #3 09-21-2007, 04:11 AM

This code is not working for me?

Error:

Fatal error: Call to undefined function: gregoriantojd() in /home/www/htdocs/photomax_clone/testing/sabari/scalar_error1.php on line 7

Sabari · #4 09-21-2007, 04:17 AM

I'm using this version of PHP Version 4.3.4?

jegan · #5 09-27-2007, 04:00 AM

I think this will work out..

<?
$date1 = '2007/09/27';
$date2 = '2007/09/25';

datediff($date1,$date2);

function datediff($d1,$d2)
{
$days = (strtotime($d1) - strtotime($d2)) / (60 * 60 * 24);
echo "Number of days between $d1 and $d2 : $days";
}
?>

Jeyaseelansarc · #6 09-27-2007, 06:24 AM

hi,
her i have given you the function to get year diffrence. it will help you to get age.

PHP Code:

  function getYearDiff($pmDateFrom, $pmDateTo, $using_timestamps = true) 

{

    

          /*

            $interval can be:

            yyyy - Number of full years

            q - Number of full quarters

            m - Number of full months

            y - Difference between day numbers

              (eg 1st Jan 2004 is "1", the first day. 2nd Feb 2003 is "33". The datediff is "-32".)

            d - Number of full days

            w - Number of full weekdays

            ww - Number of full weeks

            h - Number of full hours

            n - Number of full minutes

            s - Number of full seconds (default)

          */

          

          //# - default intervals 

          $interval='yyyy';

          if (!$using_timestamps) {

          

            $pmDateFrom = strtotime($pmDateFrom, 0);

            $pmDateTo = strtotime($pmDateTo, 0);

         }

          

          $difference = $pmDateTo - $pmDateFrom; // Difference in seconds

         switch($interval) {

          

            case 'yyyy': // Number of full years

        

              $years_difference = floor($difference / 31536000);

              if (mktime(date("H", $pmDateFrom), date("i", $pmDateFrom), date("s", $pmDateFrom), date("n", $pmDateFrom), date("j", $pmDateFrom), date("Y", $pmDateFrom)+$years_difference) > $pmDateTo) {

                $years_difference--;

              }

              if (mktime(date("H", $pmDateTo), date("i", $pmDateTo), date("s", $pmDateTo), date("n", $pmDateTo), date("j", $pmDateTo), date("Y", $pmDateTo)-($years_difference+1)) > $pmDateFrom) {

                $years_difference++;

              }

              $datediff = $years_difference;

              break;

        

            case "q": // Number of full quarters

        

              $quarters_difference = floor($difference / 8035200);

              while (mktime(date("H", $pmDateFrom), date("i", $pmDateFrom), date("s", $pmDateFrom), date("n", $pmDateFrom)+($quarters_difference*3), date("j", $pmDateTo), date("Y", $pmDateFrom)) < $pmDateTo) {

                $months_difference++;

              }

              $quarters_difference--;

              $datediff = $quarters_difference;

              break;

        

            case "m": // Number of full months

        

              $months_difference = floor($difference / 2678400);

              while (mktime(date("H", $pmDateFrom), date("i", $pmDateFrom), date("s", $pmDateFrom), date("n", $pmDateFrom)+($months_difference), date("j", $pmDateTo), date("Y", $pmDateFrom)) < $pmDateTo) {

                $months_difference++;

              }

              $months_difference--;

              $datediff = $months_difference;

              break;

        

            case 'y': // Difference between day numbers

        

              $datediff = date("z", $pmDateTo) - date("z", $pmDateFrom);

              break;

        

            case "d": // Number of full days

        

              $datediff = floor($difference / 86400);

              break;

        

            case "w": // Number of full weekdays

        

              $days_difference = floor($difference / 86400);

              $weeks_difference = floor($days_difference / 7); // Complete weeks

              $first_day = date("w", $pmDateFrom);

              $days_remainder = floor($days_difference % 7);

              $odd_days = $first_day + $days_remainder; // Do we have a Saturday or Sunday in the remainder?

              if ($odd_days > 7) { // Sunday

                $days_remainder--;

              }

              if ($odd_days > 6) { // Saturday

                $days_remainder--;

              }

              $datediff = ($weeks_difference * 5) + $days_remainder;

              break;

        

            case "ww": // Number of full weeks

        

              $datediff = floor($difference / 604800);

              break;

        

            case "h": // Number of full hours

        

              $datediff = floor($difference / 3600);

              break;

        

            case "n": // Number of full minutes

        

              $datediff = floor($difference / 60);

              break;

        

            default: // Number of full seconds (default)

        

              $datediff = $difference;

              break;

          }    

        

          return $datediff;

        

}

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