PHP date - get name of the months in local language

You should use setlocale() and strftime():

setlocale(LC_TIME, 'sr_CS');
$month_name = strftime('%B', mktime(0, 0, 0, $i));

You should use setlocale():

setlocale(LC_TIME, 'fr_FR');
$month_name = date('F', mktime(0, 0, 0, $i));

In this case it would set it to French. For your case it should be one of the following:

1. sr_BA - Serbian (Montenegro)
2. sr_CS - Serbian (Serbia)
3. sr_ME - Serbian (Serbia and Montenegro)