Dates, daylight savings and netdaysworked

[Gil]

I'm trying to mimic the functionality of netdaysworked in excel. The
code below works, except when the date starts during daylight savings
time. what is the number of seconds in a day for a daylight savings
day?

thanks,
gil

for ($dayval = $startdate; $dayval <=$enddate; $dayval+=$oneda y){
if (date(I,$dayval )==0){
echo("daylight savings time<br>");
}
if(date(w,$dayv al)==0){
$daysworked = $daysworked+0;
}
elseif(date(w,$ dayval)==6){
$daysworked = $daysworked+0;
}
else{
$daysworked++;
}
echo("first day: ".$dayval." number of days ".($dayval/86400)."
lastday : ".$lastday. "day of week :".date(w,$dayv al)."date: ".date("m-
d-Y",$dayval). " days worked: ".$daysworked." <br><br>");
}

[Gil]

On Jun 21, 1:42 pm, Gil <gilbert.mil... @gmail.comwrote :

I'm trying to mimic the functionality of netdaysworked in excel. The
code below works, except when the date starts during daylight savings
time. what is the number of seconds in a day for a daylight savings
day?

thanks,
gil

for ($dayval = $startdate; $dayval <=$enddate; $dayval+=$oneda y){
if (date(I,$dayval )==0){
echo("daylight savings time<br>");
}

if(date(w,$dayv al)==0){
$daysworked = $daysworked+0;
}
elseif(date(w,$ dayval)==6){
$daysworked = $daysworked+0;
}
else{
$daysworked++;
}
echo("first day: ".$dayval." number of days ".($dayval/86400)."
lastday : ".$lastday. "day of week :".date(w,$dayv al)."date: ".date("m-
d-Y",$dayval). " days worked: ".$daysworked." <br><br>");
}

I solved the problem...

$sm = date("m",$start date);
$sd = date("d",$start date);
$sy = date("Y",$start date);
$em = date("m",$endda te);
$ed = date("d",$endda te);
$ey = date("Y",$endda te);
$stjd = gregoriantojd($ sm,$sd,$sy);
$edjd = gregoriantojd($ em,$ed,$ey);
echo ("julian start date: ".$stjd."<br>") ;
echo ("julian end date: ".$edjd."<br>") ;
echo ("days between :".($edjd-$stjd)."<br>");
for ($dayval = $stjd; $dayval <=$edjd; $dayval+=1){

if (jddayofweek($d ayval)==0){
$daysworked = $daysworked+0;
}
elseif (jddayofweek($d ayval)==6){
$daysworked = $daysworked+0;
}
else{
$daysworked++;
}