I am trying to compare a given date string (i.e. June 30, 2002 is
20020630). I want to make sure that the input string that is given is not
greater than today (i.e. if today is June 30, and you ask for 20020701, I
want to be able to throw an error).
I'm a newbie, so I'm not sure the best way to do this. My thought was
that if I take the year (YYYY) and add on the day-of-year (i.e. Feb 10 =
041) then I would be able to compare them as you would any other numbers.
The problem I have then run into is that strftime and date seem to have
different opinions as to what day of the year it is.
date
z - day of the year; i.e. "0" to "365"
strftime
%j - day of the year as a decimal number (range 001 to 366)
I have these variables defined
$SEARCHYEAR = YYYY
i.e 2002
$SEARCHMONTH = MM
i.e. 06
$SEARCHDAY = DD
i.e. 30
$TODAYCMP=date ("Yz");
$SEARCHCMP=strftime("%Y%j",mktime(0,0,0,$SEARCHMONTH,$SEARCHDAY,$SEARCHYEAR));
and then I tried it for today and got
echo "<!-- TODAY is $TODAYCMP SEARCHCMP is $SEARCHCMP --> ";
as a result I get
<!-- TODAY is 2002180 SEARCHCMP is 2002181 -->
So I'm trying to figure out:
A) Why strftime and date don't handle leap years the same way
and (more importantly)
B) The best way to make sure a given date YYYYMMDD is not greater than
"today"
I did some googling & php.net searching without luck.
Thanks
TjL
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