$month = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
$str = "The fly went away in 1990-11-20";
$pattern = array('/(\d{4})-(\d{1,2})-(\d{1,2})/');
$replacement = array('${3}.'.'$month[\2 -1]<-- I don't know'.' ${1}');...
20 нояб. 2014, в 11:20