NYCPHP Meetup

[Sexton, David]

Hi all,
 
I've run into an issue. Supposedly the mktime function will return a UNIX
timestamp while factoring in the timezone offset on the host machine (I
assume this because there is a gmmktime function as well for passing GMT
dates).
 
Anyways, I have written a function that calculates trade dates. I am
currently reproducing the function in VB, and I noticed that the timestamp
returned by PHP's mktime function is 5 hours ahead of the timestamp returned
in VB.
 
The other thing is that I then use the PHP date function to create a
formatted date using the UNIX timestamp returned by mktime. This date seems
to be correct, and the function is working as designed. So my second
question is: If mktime is not factoring the time zone offset on my host, is
the date function compensating for it and returning the correct trade date?
 
Anyone have any insight? Thanks!
==============================
Here's some code:
 
PHP sample:
 
$month = 12;
$day = 26;
$year = 2003;
$hours = 17;
$minutes = 0;
 
$secval =
mktime(intval($hours),intval($minutes),0,intval($month),intval($day),intval(
$year));
 
PRINT $secval; //----->(Returns 1072476000)
==============================
VB sample
 
month = 12
day = 26
year = 2003
hours = 17
minutes = 0
 
strDateFormat = month & "/" & day & "/" & year & " " & hours & ":" & minutes
secval = DateDiff("s", "1/1/1970", strDateFormat)
 
MsgBox secval '----->(Returns 1072458000)


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