Antal dage uden weekend

her er en funktion der kan gøre det:

<?php
echo businessdays("14 october 2006","24 october 2006");

function businessdays($begin, $end) {
  $rbegin = is_string($begin) ? strtotime(strval($begin)) : $begin;
  $rend = is_string($end) ? strtotime(strval($end)) : $end;
  if ($rbegin < 0 || $rend < 0)
      return 0;

  $begin = workday($rbegin, TRUE);
  $end = workday($rend, FALSE);

  if ($end < $begin) {
      $end = $begin;
      $begin = $end;
  }

  $difftime = $end - $begin;
  $diffdays = floor($difftime / (24 * 60 * 60)) + 1;

  if ($diffdays < 7) {
      $abegin = getdate($rbegin);
      $aend = getdate($rend);
      if ($diffdays == 1 && ($astart['wday'] == 0 || $astart['wday'] == 6) && ($aend['wday'] == 0 || $aend['wday'] == 6))
          return 0;
      $abegin = getdate($begin);
      $aend = getdate($end);
      $weekends = ($aend['wday'] < $abegin['wday']) ? 1 : 0;
  } else
      $weekends = floor($diffdays / 7);
  return $diffdays - ($weekends * 2);
}

function workday($date, $begindate = TRUE) {
  $adate = getdate($date);
  $day = 24 * 60 * 60;
  if ($adate['wday'] == 0) // Sunday
      $date += $begindate ? $day : -($day * 2);
  elseif ($adate['wday'] == 6) // Saterday
      $date += $begindate ? $day * 2 : -$day;
  return $date;
}
?>

og hvis det er fra nu og til en given dato kalder du den med

echo businessdays(date("j F Y",time()),"24 october 2006");

så finder den antal arbejdsdage mellem i dag og 24 oktober