note 93395 modified in function.getdate by danbrown

A function/method to calculate the next workday, taking into account US federal holidays: <?php function getNextWorkDayTime($date=null) { $time = is_string($date) ? strtotime($date) : (is_int($date) ? $date : time()); $y = date('Y', $time); // calculate federal holidays $holidays = array(); // month/day (jan 1st). iteration/wday/month (3rd monday in january) $hdata = array('1/1'/*newyr*/, '7/4'/*jul4*/, '11/11'/*vet*/, '12/25'/*xmas*/, '3/1/1'/*mlk*/, '3/1/2'/*pres*/, '5/1/5'/*memo*/, '1/1/9'/*labor*/, '2/1/10'/*col*/, '4/4/11'/*thanks*/); foreach ($hdata as $h1) { $h = explode('/', $h1); if (sizeof($h)==2) { // by date $htime = mktime(0, 0, 0, $h[0], $h[1], $y); // time of holiday $w = date('w', $htime); // get weekday of holiday $htime += $w==0 ? 86400 : ($w==6 ? -86400 : 0); // if weekend, adjust } else { // by weekday $htime = mktime(0, 0, 0, $h[2], 1, $y); // get 1st day of month $w = date('w', $htime); // weekday of first day of month $d = 1+($h[1]-$w+7)%7; // get to the 1st weekday for ($t=$htime, $i=1; $i<=$h[0]; $i++, $d+=7) { // iterate to nth weekday $t = mktime(0, 0, 0, $h[2], $d, $y); // get next weekday if (date('n', $t)>$h[2]) break; // check that it's still in the same month $htime = $t; // valid } } $holidays[] = $htime; // save the holiday } for ($i=0; $i<5; $i++, $time+=86400) { // 5 days should be enough to get to workday if (in_array(date('w', $time), array(0, 6))) continue; // skip weekends foreach ($holidays as $h) { // iterate through holidays if ($time>=$h && $time<$h+86400) continue 2; // skip holidays } break; // found the workday } return $time; } ?> [EDIT BY danbrown AT php DOT net: Contains a bugfix by (yhbeh888 AT yahoo DOT com) on 24-FEB-2010 to address a bug in the "7th line counted from the bottom."] --was-- A function/method to calculate the next workday, taking into account US federal holidays: <?php function getNextWorkDayTime($date=null) { $time = is_string($date) ? strtotime($date) : (is_int($date) ? $date : time()); $y = date('Y', $time); // calculate federal holidays $holidays = array(); // month/day (jan 1st). iteration/wday/month (3rd monday in january) $hdata = array('1/1'/*newyr*/, '7/4'/*jul4*/, '11/11'/*vet*/, '12/25'/*xmas*/, '3/1/1'/*mlk*/, '3/1/2'/*pres*/, '5/1/5'/*memo*/, '1/1/9'/*labor*/, '2/1/10'/*col*/, '4/4/11'/*thanks*/); foreach ($hdata as $h1) { $h = explode('/', $h1); if (sizeof($h)==2) { // by date $htime = mktime(0, 0, 0, $h[0], $h[1], $y); // time of holiday $w = date('w', $htime); // get weekday of holiday $htime += $w==0 ? 86400 : ($w==6 ? -86400 : 0); // if weekend, adjust } else { // by weekday $htime = mktime(0, 0, 0, $h[2], 1, $y); // get 1st day of month $w = date('w', $htime); // weekday of first day of month $d = 1+($h[1]-$w+7)%7; // get to the 1st weekday for ($t=$htime, $i=1; $i<=$h[0]; $i++, $d+=7) { // iterate to nth weekday $t = mktime(0, 0, 0, $h[2], $d, $y); // get next weekday if (date('n', $t)>$h[2]) break; // check that it's still in the same month $htime = $t; // valid } } $holidays[] = $htime; // save the holiday } for ($i=0; $i<5; $i++, $time+=86400) { // 5 days should be enough to get to workday if (in_array(date('w', $time), array(0, 6))) continue; // skip weekends foreach ($holidays as $h) { // iterate through holidays if ($time>=$h && $time<=$h+86400) continue 2; // skip holidays } break; // found the workday } return $time; } ?> http://php.net/manual/en/function.getdate.php