Zend_Date bug?

wudz · #1 (**permalink**) 05-05-2008, 04:50 PM

hello,

there is a strange behaviour of Zend_Date...

Code:

$date1 = array('year' => '2008', 'month' =>'4', 'day' =>'13', 'hour' => '10', 'minute' =>'45', 'second' => '12');
$show_date1 = new Zend_Date($date1);
echo $show_date1;

//returns: 2008-04-13 10:45:12

but

Code:

$date2 = array('year' => '2008', 'month' =>'4', 'day' =>'13', 'hour' => '23', 'minute' =>'45', 'second' => '12');
$show_date2 = new Zend_Date($date2);
echo $show_date2;

//returns: 2008-04-14 23:45:12

if 'hour' >= '22'
'day' = 'day' + 1

can anyone tell me something about this?

Code:

echo Zend_Version::VERSION;

//returns: 1.5.1

thedave · #2 (**permalink**) 05-08-2008, 12:57 PM

Hi!

I know this doen't help but I have the same problem. I just can't find the code anymore. I had to subtract one hour to get to correct date. Zend_Date is a monster!

I think my problem was, that I reused the same Zend_Date object (which isn't the case in your example) and forgot to level the time correctly.

When I find my code I'll post it here.

Dave

Ewok · #3 (**permalink**) 05-12-2008, 06:53 PM

Yet more unhelpfulness. I was calculating the last day of the month, so I picked the first day added a month and subtracted a day. Unless the month had 31 days, it would return the day as 32.

I changed tack and used the MONTH_DAYS instead, which works better for what I need, but If I needed to calculate yesterday from the start of a month, no worky.

Framework was version 1.5 when I tried it.

thomas · #4 (**permalink**) 08-04-2008, 06:22 PM

@wudz: Your problem is the timezone in addition with the array syntax. This has been fixed in the latest release.

@thedave: reusing a object you need to give a complete date first before doing any calculations

@ewok: Your end-of-month calculation can not work. When adding a month with different daylengths you will have eighter the 31 of the same month or the 1st of the next month... february will brake also all. Just doing a little basic math will show that this can not work as you want.

This can be done by adding 1 month, setting 1st of month, substract one day... all oter ways will not work properly.

ramsesservices · #5 (**permalink**) 08-18-2008, 01:33 PM

Hi all,

I've got a similar problem (but I don't know if it's linked to i18n) :

When I try to display the 29th december 2008 I got the 29th december 2009.

The code:

PHP Code:


			
$dayDate = Zend_Date::now();

$dayDate->setYear(2008);

$dayDate->setMonth(12);

$dayDate->setDay(29);

echo $dayDate->toString('dd/MM/YYYY');

result = 29/12/2009

Strange ...

ZF version : 1.5.3

ramsesservices · #6 (**permalink**) 08-18-2008, 02:07 PM

I got the same problem with the 2007-12-31

Any idea ?

thomas · #7 (**permalink**) 08-18-2008, 02:58 PM

This is no bug but a feature.

You should read the manual where you find a description of this problem and the reason as also the solution.

Zend Framework: Documentation

From the manual:

Quote:

NoteNote that the default ISO format differs from PHP's format which can be irritating if you have not used in previous. Especially the format specifiers for Year and Minute are often not used in the intended way.

For year there are two specifiers available which are often mistaken. The Y specifier for the ISO year and the y specifier for the real year. The difference is small but significant. Y calculates the ISO year, which is often used for calendar formats. See for example the 31. December 2007. The real year is 2007, but it is the first day of the first week in the week 1 of the year 2008. So, if you are using 'dd.MM.yyyy' you will get '31.December.2007' but if you use 'dd.MM.YYYY' you will get '31.December.2008'. As you see this is no bug but a expected behaviour depending on the used specifiers.

For minute the difference is not so big. ISO uses the specifier m for the minute, unlike PHP which uses i. So if you are getting no minute in your format check if you have used the right specifier.

Simply said use "y" instead of "Y".
Sometimes reading the manual really helps.

ramsesservices · #8 (**permalink**) 08-18-2008, 03:16 PM

Thanks a lot for your prompt response. You save me!

I'll read the doc until the end next time

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