Description:
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When using  day of the year character 'z' with 'Y' for creation date - order is important, but not important when using 'd-m-Y'.

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From manual page: http://www.php.net/datetime.createfromformat
---

Test script:
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<?php
$date1 = DateTime::createFromFormat('z Y', "59 2016"); //wrong with leap year
$date2 = DateTime::createFromFormat('Y z', "2016 59"); //correct
$date3 = DateTime::createFromFormat('d-m-Y', "29-02-2016"); //correct
$date4 = DateTime::createFromFormat('Y-m-d', "2016-02-29"); //correct

// let's see:
print $date1->format("z Y")."\n"; //60 2016
print $date2->format("z Y")."\n"; //59 2016
print $date3->format("z Y")."\n"; //59 2016
print $date4->format("z Y")."\n"; //59 2016

Expected result:
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59 2016
59 2016
59 2016
59 2016

Actual result:
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60 2016
59 2016
59 2016
59 2016