如何将Zend DateTime元素设置为'0000-00-00 00:00:00'？

Question

I am using the Zend Framework 2 DateTimeSelect. How can I set the value (either in the form class or controller) to '0000-00-00 00:00:00'? Currently it defaults to the end of the year. I get the following results when i try the following in the controller...

$date = date("0-0-0 0:0:0"); `This gives me the date as November 30th`
$date =  '0000-00-00 00:00:00';`This gives me the date as November 30th`
$date =  NULL; `This gives me the current date time.` 

 $form->get('datetime')->setValue($date);

I would like to leave this field either empty or as 0 until the task is complete.

Many Thanks Matt

Answer 1

You might have a misconception as to how years are counted arround the 1 b.c and 1 a.d mark.

The last day month and year of before christus is 30th of december 1 b.c. Right after that follows the 1st January 1 a.d(Anno Domini). Historically speaking there is no year 0 it start's with year one.

Which means if we create DateTime Object and set a date to day=0, month=0, year=0 will still be in the before christus date region.

$test = new DateTime();
$test->setDate(0, 0, 0);
//I left out timezone settings so it'll take the default timezone
var_dump($test); exit;

would outup:

object(DateTime)#1 (3) { ["date"]=> string(20) "-0001-11-30 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/Berlin" }

-0001-11-30 looks a bit weird since php counts months beginning with 0 = January, .... , 11 = December.

Now unlike the setDate method the constructor takes strings as a parameter which gets parsed into the Time Object. Which basically calls the set Date method at the end with the same

day = 0 month = 0 year = 0

which again would output:

object(DateTime)#1 (3) { ["date"]=> string(20) "-0001-11-30 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/Berlin" }

This leads me to the conclusion that getting the out of the box DateTime Object Class to render the specific date "0000-00-00:00:00:00" is literary impossible and historically incorrect.

Could you please elaborate as to why you want to this in detail?