Setlocale returns false

[dribdas]

I have installed the dutch local (nl_NL utf8) on my webserver (when I execute locale -a I see nl_NL utf8 so this is allright).However, the dates on my webpage are in english (I have put setlocale(LC_ALL, 'nl_NL'); in the top of my pages). I have read when you install a locale package after compiling php, I have to recompile php.But is there any other solution, without recompiling php, to let it work?Thanks!