Description:
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My PHP version is actualy 5.5.12 (not 5.5.13, but I wasn't able to select this version on the list).

It seems that some timezone (at least Antarctica/Troll) are not working with the datefmt_create function.


Test script:
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$fmt = datefmt_create('en_UK', IntlDateFormatter::FULL, IntlDateFormatter::FULL, 'Antarctica/Troll', IntlDateFormatter::GREGORIAN, 'Y-MM-dd HH:mm:ss');
var_dump($fmt);

Expected result:
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something like
object(IntlDateFormatter)#xx (0) { }

Actual result:
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null