Reply to Re: Can using the date cause problems for date comparison?

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Posted by ZeldorBlat on 05/12/07 01:31

On May 11, 9:13 pm, JJ <j...@aol.com> wrote:
> Here's the code.
>
> $link="http://xbox360cheat.org";
>
> $close_date=$_POST["close_date"]; #last content change check
>
> if ($close_date == 0)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m"), date
> ("d")+7, date("Y")));
> else if ($close_date == 1)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m"), date
> ("d")+5, date("Y")));
> else if ($close_date == 2)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m"), date
> ("d")+3, date("Y")));
> else if ($close_date == 3)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m"), date
> ("d")+14, date("Y")));
> else if ($close_date == 4)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m"), date
> ("d")+21, date("Y")));
> else if ($close_date == 5)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m")+1, date
> ("d"), date("Y")));
> else if ($close_date == 6)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m")+2, date
> ("d"), date("Y")));
> else if ($close_date == 7)
> $close_date = date("Y-m-d H:m:s", mktime(12, 0, 0, date("m")+3, date
> ("d"), date("Y")));
>
> $linkStatus=checkDate($link,$close_date);
>
> Could the close_date be one that is not the expected value? For example,
> if the month is 11 and $close_date == 7, then the mktime function should
> return the next year for the year value, not the current year. And if the
> day is the last week of December, than the month and year should change
> if close_date == 7. Thanks for any help.

According to the manual, mktime() will return false if the arguments
are invalid.

You can avoid such problems altogether by just using strtotime(). It
also makes what you're trying to do clearer:

switch($close_date) {
case 0:
$close_date = strtotime('+7 days');
break;
case 1:
$close_date = strtotime('+5 days');
break;
case 2:
$close_date = strtotime('+3 days');
break;
case 3:
$close_date = strtotime('+2 weeks');
break;
case 4:
$close_date = strtotime('+3 weeks');
break;
case 5:
$close_date = strtotime('+1 month');
break;
case 6:
$close_date = strtotime('+2 months');
break;
case 7:
$close_date = strtotime('+3 months');
break;
}

//Make it noon on that day:
$close_date = mktime(12, 0, 0, date('m', $close_date), date('d',
$close_date), date('Y', $close_date));
//Format it:
$close_date = date('Y-m-d H:m:s', $close_date);

[Back to original message]


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