Get timestamp from date('z') and year

Question

I know the year and the day of year (0-365). Is there any way to get back from it to timestamp?

Something like:

$day=date('z');
$year=2012;

$timestamp=strtotime($day.'-nd day of '.$year);

score 5 · Accepted Answer · answered May 08 '12 at 14:07

5

Try the following:

$timestamp = mktime(0,0,0,1,$day,$year);

It will produce a timestamp where the time is set to 0:00:00. (I am not sure if it will behave correctly with respect to daylight savings though...)

Check the PHP manual for further details: PHP: mktime - Manual

answered May 08 '12 at 14:07

Waboodoo

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Thanks, this help me to save lot of time! Marked as right answer. – Narek May 10 '12 at 11:41

score 2 · Answer 2 · answered May 08 '12 at 14:06

2

Maybe strtotime gets handy here: php -r 'echo @date("Y-m-d H:s", strtotime("january 2012 +200 day")).PHP_EOL;' In your example $timestamp = strtotime("january $year +$day day");

answered May 08 '12 at 14:06

core1024

1,882
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score 1 · Answer 3 · answered May 08 '12 at 14:05

1

Try using createFromFormat :

$date = DateTime::createFromFormat('z Y', $day . ' ' . $year);
echo $date->getTimestamp();

answered May 08 '12 at 14:05

Manse

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I liitle afraid to use classes like this, because in some servers they didn't work, but in future this will be the best solution I think. Thanks! – Narek May 10 '12 at 11:43

Get timestamp from date('z') and year

3 Answers3